I thought that was the case so I sanded the lip off the router that appeared to touch. It doesn’t now but still stops. I can take a wrench and turn nut on top and it will come up without touching anything. It just want without help. It will come down on it’s on no problem? I’m at a loss, I have looked to make sure it’s not hitting an screws or anything. The only thing I can find is that the belt that stepper motor turns is really tight, but didn’t think I should loosen it to cause the gear to turn and not the belt.