Hi Guy yes that's just a display artifact. Some more detailed info here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=10580.2

- Michael

In Options > View > Mesh angle: set it up to something like 3.

Wow, that helped a lot.
Never thought was a graphical artifacts but a program node within itself.
Glad to sorted that one out.

its easer to figure out the final product this way.
Too many artifacts usually confuses me (even though its an aproximate),,..

Thx...