When I'm not playing with leather I work full time as a sailmaker. In our loft we have a ton of really old machines and cluch motors. i know exactly what your talking about. to make it go straight again..... turn the motor off, start running the hand wheel as fast as you can twards you. turn the motor back on and it will come back to reality. I've had a machine here at the loft thats one that just hasnt been replaced yet and I've been doing this for over 7 years to it.
-Mike