I just put together the Z Axis portion of the X-Carve. I noticed that to turn the spindle at the top where the Z Axis motor will eventually have a belt is very tough. Takes a decent amount of finger strength to turn this. Do I have the nut on top of the Lead Screw too tight? I wasn’t sure how much strength the motor had to move the Z Axis up and down and want to fix this before I get everything assembled.