diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9f1ad2..6121d9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,10 +9,11 @@
 * (Improvement) GUI is now scalable
 * (Fix) Some bug found and fixed during convertion
 
-## /10/2020 - v0.8.4.2
+## 10/10/2020 - v0.8.4.2
 
 * (Fix) pws and pw0: Error when try to save or copy to clipboard the slicer information / properties
-* (Fix) phton, ctb, cbbdlp, pws, pw0, phz: Rare cases were decoding image generate noise and malformed image
+* (Fix) photon, ctb, cbbdlp, phz, pws, pw0: Rare cases were decoding image generate noise and malformed image
+* (Fix) Rare cases where manipulation of images generate areas with noise
 
 ## 10/10/2020 - v0.8.4.1
 
diff --git a/UVtools.Core/UVtools.Core.csproj b/UVtools.Core/UVtools.Core.csproj
index 4c3e802..786f667 100644
--- a/UVtools.Core/UVtools.Core.csproj
+++ b/UVtools.Core/UVtools.Core.csproj
@@ -10,12 +10,12 @@
     <RepositoryUrl>https://github.com/sn4k3/UVtools</RepositoryUrl>
     <PackageProjectUrl>https://github.com/sn4k3/UVtools</PackageProjectUrl>
     <Description>MSLA/DLP, file analysis, repair, conversion and manipulation</Description>
-    <Version>0.8.4.1</Version>
+    <Version>0.8.4.2</Version>
     <Copyright>Copyright © 2020 PTRTECH</Copyright>
     <PackageIcon>UVtools.png</PackageIcon>
     <Platforms>AnyCPU;x64</Platforms>
-    <AssemblyVersion>0.8.4.1</AssemblyVersion>
-    <FileVersion>0.8.4.1</FileVersion>
+    <AssemblyVersion>0.8.4.2</AssemblyVersion>
+    <FileVersion>0.8.4.2</FileVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
diff --git a/UVtools.GUI/Properties/AssemblyInfo.cs b/UVtools.GUI/Properties/AssemblyInfo.cs
index b1782bb..20c38ad 100644
--- a/UVtools.GUI/Properties/AssemblyInfo.cs
+++ b/UVtools.GUI/Properties/AssemblyInfo.cs
@@ -35,5 +35,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.8.4.1")]
-[assembly: AssemblyFileVersion("0.8.4.1")]
+[assembly: AssemblyVersion("0.8.4.2")]
+[assembly: AssemblyFileVersion("0.8.4.2")]
diff --git a/UVtools.WPF/Controls/AdvancedImageBox.cs b/UVtools.WPF/Controls/AdvancedImageBox.cs
index e33ca7e..7fda650 100644
--- a/UVtools.WPF/Controls/AdvancedImageBox.cs
+++ b/UVtools.WPF/Controls/AdvancedImageBox.cs
@@ -1119,6 +1119,15 @@ namespace UVtools.WPF.Controls
 
         }
 
+        /// <summary>
+        /// Zooms to current selection region
+        /// </summary>
+        public void ZoomToSelectionRegion()
+        {
+            if (!HaveSelection) return;
+            ZoomToRegion(SelectionRegion);
+        }
+
         /// <summary>
         ///   Centers the given point in the image in the center of the control
         /// </summary>
diff --git a/UVtools.WPF/MainWindow.LayerPreview.cs b/UVtools.WPF/MainWindow.LayerPreview.cs
index d23a1ee..da94ab2 100644
--- a/UVtools.WPF/MainWindow.LayerPreview.cs
+++ b/UVtools.WPF/MainWindow.LayerPreview.cs
@@ -57,11 +57,15 @@ namespace UVtools.WPF
         private bool _showLayerOutlineHollowAreas;
         private bool _showLayerOutlineEdgeDetection;
 
+        private bool _isTooltipOverlayVisible;
+        private string _tooltipOverlayText;
+
         private long _showLayerRenderMs;
 
         public LayerCache LayerCache = new LayerCache();
         private Point _lastPixelMouseLocation = Point.Empty;
 
+
         public void InitLayerPreview()
         {
             LayerImageBox = this.FindControl<AdvancedImageBox>("LayerImage");
@@ -265,6 +269,18 @@ namespace UVtools.WPF
         public bool CanGoUp => _actualLayer < SliderMaximumValue;
         public bool CanGoDown => _actualLayer > 0;
 
+        public bool IsTooltipOverlayVisible
+        {
+            get => _isTooltipOverlayVisible;
+            set => RaiseAndSetIfChanged(ref _isTooltipOverlayVisible, value);
+        }
+
+        public string TooltipOverlayText
+        {
+            get => _tooltipOverlayText;
+            set => RaiseAndSetIfChanged(ref _tooltipOverlayText, value);
+        }
+
         public string LayerPixelCountStr
         {
             get
@@ -362,6 +378,11 @@ namespace UVtools.WPF
             }
             set => LayerImageBox.SelectionRegion = value.ToAvalonia();
         }
+
+        public void OnROIClick()
+        {
+            LayerImageBox.ZoomToSelectionRegion();
+        }
         #endregion
 
         public void GoFirstLayer()
diff --git a/UVtools.WPF/MainWindow.PixelEditor.cs b/UVtools.WPF/MainWindow.PixelEditor.cs
index 991e113..59ec244 100644
--- a/UVtools.WPF/MainWindow.PixelEditor.cs
+++ b/UVtools.WPF/MainWindow.PixelEditor.cs
@@ -101,6 +101,7 @@ namespace UVtools.WPF
 
         private void DrawingsGridOnKeyUp(object? sender, KeyEventArgs e)
         {
+            
             switch (e.Key)
             {
                 case Key.Escape:
@@ -264,7 +265,7 @@ namespace UVtools.WPF
                     //if (PixelHistory.Contains(operation)) continue;
                     //PixelHistory.Add(operation);
                     Drawings.Add(operationText);
-
+                    
                     /*var color = isAdd
                         ? Settings.PixelEditor.AddPixelColor : Settings.PixelEditor.RemovePixelColor;
 
diff --git a/UVtools.WPF/MainWindow.axaml b/UVtools.WPF/MainWindow.axaml
index 86c2473..3e56e71 100644
--- a/UVtools.WPF/MainWindow.axaml
+++ b/UVtools.WPF/MainWindow.axaml
@@ -641,7 +641,7 @@
           </StackPanel>
         </TabItem.Header>
 
-        <Grid RowDefinitions="Auto,Auto,*">
+        <Grid RowDefinitions="Auto,20,Auto,*">
           <TabControl SelectedIndex="{Binding SelectedPixelOperationTabIndex}">
             <!-- Drawing !-->
             <TabItem
@@ -1065,55 +1065,21 @@
 &#x0a;Note: this operation can't be previewed."/>
                 </Border>
                 <Grid
-                  RowDefinitions="Auto,10,Auto,10,Auto"
+                  RowDefinitions="Auto"
                   ColumnDefinitions="Auto,10,100,5,Auto">
                   <TextBlock
                     Grid.Row="0"
                     Grid.Column="0"
                     VerticalAlignment="Center"
-                    Text="Tip diameter:" />
-                  <NumericUpDown
-                    Grid.Row="0"
-                    Grid.Column="2"
-                    Minimum="1"
-                    Maximum="255"
-                    Value="{Binding DrawingPixelSupport.TipDiameter}"/>
-                  <TextBlock
-                    Grid.Row="0"
-                    Grid.Column="4"
-                    VerticalAlignment="Center"
-                    Text="px" />
-
-                  <TextBlock
-                    Grid.Row="2"
-                    Grid.Column="0"
-                    VerticalAlignment="Center"
-                    Text="Pillar diameter:" />
-                  <NumericUpDown
-                    Grid.Row="2"
-                    Grid.Column="2"
-                    Minimum="1"
-                    Maximum="255"
-                    Value="{Binding DrawingPixelSupport.PillarDiameter}"/>
-                  <TextBlock
-                    Grid.Row="2"
-                    Grid.Column="4"
-                    VerticalAlignment="Center"
-                    Text="px" />
-
-                  <TextBlock
-                    Grid.Row="4"
-                    Grid.Column="0"
-                    VerticalAlignment="Center"
                     Text="Hole diameter:" />
                   <NumericUpDown
-                    Grid.Row="4"
+                    Grid.Row="0"
                     Grid.Column="2"
                     Minimum="20"
                     Maximum="255"
                     Value="{Binding DrawingPixelDrainHole.Diameter}"/>
                   <TextBlock
-                    Grid.Row="4"
+                    Grid.Row="0"
                     Grid.Column="4"
                     VerticalAlignment="Center"
                     Text="px" />
@@ -1127,7 +1093,7 @@
 
           <!-- Toolbar !-->
           <StackPanel
-            Grid.Row="1"
+            Grid.Row="2"
             Orientation="Horizontal" Spacing="1">
             <Button IsEnabled="{Binding #DrawingsGrid.SelectedItem, Converter={x:Static ObjectConverters.IsNotNull}}"
             Command="{Binding OnClickDrawingRemove}">
@@ -1152,7 +1118,7 @@
           </StackPanel>
 
           <StackPanel 
-            Grid.Row="1"
+            Grid.Row="2"
             HorizontalAlignment="Right" 
             Orientation="Horizontal" 
             Spacing="10" 
@@ -1171,7 +1137,7 @@
 
           <DataGrid
                   Name="DrawingsGrid"
-                  Grid.Row="2"
+                  Grid.Row="3"
                   CanUserReorderColumns="True"
                   CanUserResizeColumns="True"
                   CanUserSortColumns="True"
@@ -1526,6 +1492,16 @@
      Name="LayerImage"
       />
 
+      <Canvas Grid.Row="1" Margin="20"
+              IsVisible="{Binding IsTooltipOverlayVisible}"
+              >
+        <Border
+        Background="{Binding Settings.LayerPreview.TooltipOverlayBackgroundBrush}" Padding="10">
+          <TextBlock Text="{Binding TooltipOverlayText}" />
+        </Border>
+      </Canvas>
+      
+
       <StackPanel Margin="0,5,0,0" Grid.Row="2" Orientation="Horizontal" Spacing="5">
         <StackPanel
           ToolTip.Tip="Number of pixels to cure on this layer image and the percetange of them against total lcd pixels"
@@ -1547,7 +1523,7 @@
 
         <Button
           IsEnabled="{Binding #LayerImage.HaveSelection}"
-          Command="{Binding }"
+          Command="{Binding OnROIClick}"
           ToolTip.Tip="Region of interest selection over layer.
 &#x0a;(NS): Not selected
 &#x0a;Click: go to region | ESC: Clear ROI"
diff --git a/UVtools.WPF/MainWindow.axaml.cs b/UVtools.WPF/MainWindow.axaml.cs
index 8d7b901..fe78532 100644
--- a/UVtools.WPF/MainWindow.axaml.cs
+++ b/UVtools.WPF/MainWindow.axaml.cs
@@ -447,24 +447,24 @@ namespace UVtools.WPF
                 {
                     LayerImageBox.AutoPan = false;
                     LayerImageBox.Cursor = StaticControls.CrossCursor;
-                    /*lbLayerImageTooltipOverlay.Text = "Pixel editing is on:\n" +
+                    TooltipOverlayText = "Pixel editing is on:\n" +
                                                       "» Click over a pixel to draw\n" +
                                                       "» Hold CTRL to clear pixels";
 
-                    UpdatePixelEditorCursor();*/
+                    //UpdatePixelEditorCursor();
                 }
                 else
                 {
                     LayerImageBox.Cursor = StaticControls.CrossCursor;
                     LayerImageBox.SelectionMode = AdvancedImageBox.SelectionModes.Rectangle;
-                    /*lbLayerImageTooltipOverlay.Text = "ROI selection mode:\n" +
-                                                      "» Left-click drag to select a fixed region\n" +
-                                                      "» Left-click + ALT drag to select specific objects\n" +
-                                                      "» Right click on a specific object to select it\n" +
-                                                      "Press Esc to clear the ROI";*/
+                    TooltipOverlayText = "ROI selection mode:\n" +
+                                         "» Left-click drag to select a fixed region\n" +
+                                         "» Left-click + ALT drag to select specific objects\n" +
+                                         "» Right click on a specific object to select it\n" +
+                                         "Press Esc to clear the ROI";
                 }
 
-                //lbLayerImageTooltipOverlay.Visible = Settings.Default.LayerTooltipOverlay;
+                IsTooltipOverlayVisible = Settings.LayerPreview.TooltipOverlay;
                 e.Handled = true;
                 return;
             }
@@ -473,10 +473,10 @@ namespace UVtools.WPF
             {
                 LayerImageBox.Cursor = StaticControls.HandCursor;
                 LayerImageBox.AutoPan = false;
-                /*lbLayerImageTooltipOverlay.Text = "Issue selection mode:\n" +
-                                                  "» Click over an issue to select it";
+                TooltipOverlayText = "Issue selection mode:\n" +
+                                     "» Click over an issue to select it";
 
-                lbLayerImageTooltipOverlay.Visible = Settings.Default.LayerTooltipOverlay;*/
+                IsTooltipOverlayVisible = Settings.LayerPreview.TooltipOverlay;
                 e.Handled = true;
                 return;
             }
@@ -494,7 +494,7 @@ namespace UVtools.WPF
                 LayerImageBox.Cursor = StaticControls.ArrowCursor;
                 LayerImageBox.AutoPan = true;
                 LayerImageBox.SelectionMode = AdvancedImageBox.SelectionModes.None;
-                //lbLayerImageTooltipOverlay.Visible = false;
+                IsTooltipOverlayVisible = false;
                 e.Handled = true;
             }
         }