Quote Originally Posted by John S View Post
Is the knob on the end of the motor slipping?

You need to sort this bit out first, try welding the stepper motor to the ball screw.

Just joking.
Welding - cool, now ya talking

The knob itself is on the motor that tight I'd break it if I tried to remove it so the only thing left is the coupling I might go tear the motor off and suss that lot out