I have a couple of J-heads. Recently, I took the motor off one and tried it on the other (to see how quiet the other one ran with a known-good motor). Then I put it back onto the head it came from, the one on my mill. Problem now is, I can't seem to get the clamping screws adjusted so that they stay put when I loosen/tighten the levers to change belt speeds. They worked fine beforehand, and I didn't change any of the hardware. I must be doing something wrong, but I can't figure out what. I don't want to have to use two hands to do this. Anyone?
GWE