Unexpected Zebra Analysis output

I have a simple surface made from NetworkSrf which is exhibiting strange behavior under Zebra Analysis. The lower corner in the screenshot appears uneven, despite a pretty basic UV geometry. I’ve tried rebuilding the surface and nudging control points to no avail. Any thoughts appreciated.

FOAM BLANK 013.3dm (15.3 MB)

Well, first you’d need to up the mesh settings–like a lot, crank the starting polygons to 5000–to see if something’s really going on or if it’s just the analysis mesh.

Thanks Jim – appreciate your reply (and I’ve learned a ton from your videos).