Ok, flame me if you will, I went and did it.
In testing / tuning my new retrofit, I jammed the Z axis up into the head.
Searching Google I am not alone. Some suggest I use a pair of channel locks around the stepper pulley and "assist" the motor. I am thinking of using a bar clamp.
Either way I have a problem. I have no idea which way to turn it. Obviously I have take the cover off and tried to see which way when I step the jammed motor, no luck at all.
Anyone know or care to look at which way I need to go. Sounds like a simple stupid question, but I have no other resource other than taking the entire head apart.
Thanks,
Chris