Bernina 145 Bobbin winding problem

Question

My Bernina won't properly wind a bobbin.  The slightest bit of thread tension (from the spool to the bobbin) causes the bobbin winding post to stop spinning.

Grrrrrrr! --  aAny self fix or self adjustment suggestions?  Really hate to take it to a tech because frequently when I do the machine comes back with some new problem.  I'm in San Francisco and there just don't seem to be any good machine techs near here these days.