Additionally the fix for this, plus one other tune-up improves making simple all-quad meshes for surfaces of revolution.

In the next beta the unwanted n-gons that Tony got in this message:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2000.4
are now all quads instead.

It also used to be possible to occasionally get an n-gon instead of a quad in the seam area of a surface of revolution, that's also fixed, those will be all quads in those areas now.

- Michael