Finally dialed in

I downloaded this:

http://www.thingiverse.com/thing:200526

and printed it (not a long print--a good thing to experiment on) and lo-and-behold, popped it off the bed and the inner part just spins like it should.

Too cool. Finally all of the quirks are worked out I think ...
It is too small and detailed of a part for much to not be right and still have it work.


(FWIW: I used white ABS and 100% infill)