This all goes away though , no trim point or any containment at all necessary, if I use the plane at angles on the turning workpiece dialogue.
Thanks for the help I do appreciate your time. Has anyone else had an issue with auto on a simple part like this not being correct?
The automatic spun outline is a great idea, but as you have seen, it can struggle at times. With recent Parasolid updates, you'll find it is better in NX9.
This is in fact why we added planes an angles and planes through points. Although they may require a little interaction depending on the part shape, the results are usually rock solid. If you are in 8.5, I would just use planes at angles.