The jumping between angles is indeed a pain in the a*s due to GL off course but I think I'll post a small level with what I've got. The rotation works perfect but the jumping of angles is like mentioned a hard thing to get right. It seems after using ang_rotate for arbitrary rotation and switching to the native angles (pan, tilt and roll) again, that the angles shift. Thus defining angles after using ang_rotate is the only option AFAIK atm.
Anyway, I'll probably post it tommorrow so you guys can play around with it as well

Cheers

Frazzle