Shouldn't do that, works fine here.
1. Fix your dxf drawing that you posted. Not all the elements were connected,ie. after the first breech circle.
See Appendix "B" in the manual for common drawing mistakes. Aslo move the profile as show in the manual
2. Now think about how your going to machine that profile.
How are you going to hold it,ie; in a lathe chuck and also use the tail stock?
Test question: What kind of tool will machine around the balls and not gouge the work and can get into the corners?
RICH