Hi everyone! My new Vevor 3020 desktop CNC arrived on Friday. Assembly was straight forward and the machine works when jogging from the control panel in the Candle software. I have a problem with the X axis though.

I've set the workplace zero point and sent a G code file to the machine. It starts a diagonal movement to the place it wants to start cutting but a second into the movement, the X axis jams for a second and then it continues. It will carry on and cut the programmed shape OK, just in the wrong place. As I've said, I can jog the axis without problem. The leadscrew turns freely by hand.

What potential problem could there be where it struggles with this initial diagonal movement?