Hi snookD, thanks for posting the file.

That one looks like a pretty different issue than the previous stuff.

The stuff to ignore in the display are slight jaggedy looking shallow curves, like the kind of stuff you posted here: http://moi3d.com/forum/index.php?webtag=MOI&msg=2986.7

In this new case where the display triangles are kind of "leaking" outside the boundary - that is a different kind of a thing. That is not normal and it may indicate some problem with the trimming boundary, like a self-intersection or tiny "curly-cue" type thing in the trimming boundary of some faces.

I'll see if I can figure out what is wrong in this case.

- Michael