It looks like there is also another problem with these side surfaces too:




If I untrim that surface and look at its structure, it does not come to a clean single point tip, it actually has a tiny edge there that's nearly in line with the edge from the other side:



That looks like it has formed a self intersecting folded-over-itself corner area to that surface - that kind of surface folding over itself in its corner areas will cause a lot of various difficulties, see this previous post for some more description on how that kind of self-intersecting corner region:
http://moi3d.com/forum/index.php?webtag=MOI&msg=1127.4

So those side areas may need to be reconstructed to be better as well.

- Michael

Thanks Michael. That script will come in really handy. Spent searching but not finding anything.

Hi Sebastian,

> That script will come in really handy.
> Spent searching but not finding anything.

Just go to the link Michael posted above for the SelectNakedEdges script and you will see the script in the grey area, copy and paste that in Moi under Options > Shortcut keys in the command area and then assign a Key to it, 'N' is suggested.

Cheers
~Danny~