Hi Roger, @Dodge ,
I don’t know what’s happening, just from looking at the screenshot….I’d suggest you update Blender to 4.2.1 (and make sure your GPU driver is up to date).
Go through the usual suspects ‘double Vertices’ and inconsistent Normals (in Edit Mode, with everything Selected: M > Merge > By Distance, followed by SHIFT+N).
If that doesn’t help, could you post a link to your .blend file here (via Dropbox, googledrive, or so).
