diff --git a/MatterControlLib/DesignTools/Primitives/DescriptionObject3D.cs b/MatterControlLib/DesignTools/Primitives/DescriptionObject3D.cs
index dc6a9184d..ad05e31c5 100644
--- a/MatterControlLib/DesignTools/Primitives/DescriptionObject3D.cs
+++ b/MatterControlLib/DesignTools/Primitives/DescriptionObject3D.cs
@@ -34,6 +34,7 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using Markdig.Agg;
+using Markdig.Renderers.Agg.Inlines;
 using MatterHackers.Agg;
 using MatterHackers.Agg.Platform;
 using MatterHackers.Agg.UI;
@@ -268,6 +269,8 @@ namespace MatterHackers.MatterControl.DesignTools
 			if (markdownWidget.Markdown != description)
 			{
 				markdownWidget.Markdown = description;
+
+				FixSelectableBasedOnLinks(markdownWidget);
 			}
 
 			markdownWidget.Width = width;
@@ -298,6 +301,24 @@ namespace MatterHackers.MatterControl.DesignTools
 			graphics2DOpenGL.RenderTransformedPath(transform, new Ellipse(0, 0, 5, 5), theme.PrimaryAccentColor, false);
 		}
 
+        private void FixSelectableBasedOnLinks(MarkdownWidget markdownWidget)
+        {
+			if (markdownWidget.Descendants<TextLinkX>().Any())
+			{
+				foreach (var child in markdownWidget.Children)
+				{
+					child.Selectable = true;
+				}
+			}
+			else
+            {
+				foreach (var child in markdownWidget.Children)
+				{
+					child.Selectable = false;
+				}
+			}
+		}
+
 		public AxisAlignedBoundingBox GetEditorWorldspaceAABB(Object3DControlsLayer layer)
 		{
 			return AxisAlignedBoundingBox.Empty();
@@ -328,17 +349,15 @@ namespace MatterHackers.MatterControl.DesignTools
 				markdownWidget.Markdown = Description;
 				markdownWidget.Width = width;
 				markdownWidget.ScrollArea.VAnchor = VAnchor.Fit | VAnchor.Center;
-				foreach (var child in markdownWidget.Children)
-				{
-					child.Selectable = false;
-				}
+
+				FixSelectableBasedOnLinks(markdownWidget);
 
 				controlLayer.GuiSurface.AddChild(markdownWidget);
 				controlLayer.GuiSurface.AfterDraw += GuiSurface_AfterDraw;
 				markdownWidget.MouseDown += MarkdownWidget_MouseDown;
 				markdownWidget.MouseMove += MarkdownWidget_MouseMove;
 				markdownWidget.MouseUp += MarkdownWidget_MouseUp;
-				markdownWidget.KeyDown += MarkdownWidget_KeyDown; ;
+				markdownWidget.KeyDown += MarkdownWidget_KeyDown;
 			}
 		}
 
diff --git a/MatterControlLib/PrinterCommunication/PrinterConnection.cs b/MatterControlLib/PrinterCommunication/PrinterConnection.cs
index adc7d87d2..3898c7df7 100644
--- a/MatterControlLib/PrinterCommunication/PrinterConnection.cs
+++ b/MatterControlLib/PrinterCommunication/PrinterConnection.cs
@@ -1757,7 +1757,7 @@ Make sure that your printer is turned on. Some printers will appear to be connec
 			}
 
 			Console.WriteLine("Exiting ReadFromPrinter method: " + CommunicationState.ToString());
-			if (CommunicationState == CommunicationStates.Connected)
+			if (CommunicationState != CommunicationStates.Disconnecting)
 			{
 				// we are in an error condition where we have lost the com port
 				CommunicationState = CommunicationStates.Disconnected;
diff --git a/MatterControlLib/Utilities/MarkdigAgg/MarkdownWidget.cs b/MatterControlLib/Utilities/MarkdigAgg/MarkdownWidget.cs
index 6eecdfee1..b42dddcbe 100644
--- a/MatterControlLib/Utilities/MarkdigAgg/MarkdownWidget.cs
+++ b/MatterControlLib/Utilities/MarkdigAgg/MarkdownWidget.cs
@@ -94,7 +94,14 @@ namespace Markdig.Agg
 			this.AddChild(contentPanel);
 		}
 
-		public void LoadUri(Uri uri, HelpArticle sourceArticle = null)
+        public override void OnSizeChanged(EventArgs e)
+        {
+			contentPanel.Height = contentPanel.Height - 1;
+
+			base.OnSizeChanged(e);
+        }
+
+        public void LoadUri(Uri uri, HelpArticle sourceArticle = null)
 		{
 			try
 			{
diff --git a/StaticData/Images/Thumbnails/11417487296858350101-256x256.png b/StaticData/Images/Thumbnails/3705231141807988552-256x256.png
similarity index 100%
rename from StaticData/Images/Thumbnails/11417487296858350101-256x256.png
rename to StaticData/Images/Thumbnails/3705231141807988552-256x256.png
diff --git a/StaticData/Materials/BASF/PRO1 Tough PLA.material b/StaticData/Materials/BASF/PRO1 Tough PLA.material
index c8b998bfe..1ca21a9ad 100644
--- a/StaticData/Materials/BASF/PRO1 Tough PLA.material	
+++ b/StaticData/Materials/BASF/PRO1 Tough PLA.material	
@@ -22,7 +22,7 @@
       "max_fan_speed_layer_time": "60",
       "min_fan_speed": "60",
       "min_fan_speed_layer_time": "180",
-      "temperature": "220"
+      "temperature": "215"
     }
   ],
   "OemLayer": null,
diff --git a/StaticData/OEMSettings/SampleParts/Retraction Cubes.mcx b/StaticData/OEMSettings/SampleParts/Retraction Cubes.mcx
new file mode 100644
index 000000000..d54d6bc77
Binary files /dev/null and b/StaticData/OEMSettings/SampleParts/Retraction Cubes.mcx differ
diff --git a/StaticData/OEMSettings/SampleParts/Retraction Cubes.stl b/StaticData/OEMSettings/SampleParts/Retraction Cubes.stl
deleted file mode 100644
index 9756e5e03..000000000
Binary files a/StaticData/OEMSettings/SampleParts/Retraction Cubes.stl and /dev/null differ