The goal here is to ensure the lead screws are paralel to their rails. This step is very important to ensure proper print quality. The Z motor mounts were designed to allow some adjustment - we'll take advantage of that here

If needed loosen the 4 screws holding the front motor mounts and move the motor around to achieve proper lead screw alignment

Proper alignment is when the arm does not bind in any point

Ensure the alignment of the back lead screw by allowing the mount to move in X with the M5 screws

Alignment in Y of the back lead can be achieved by loosening of the M3 screws holding the motor to the mount

If you did not already, at this point make sure to fasten all screws in the MGN rails

Please refer to the linear rail installation guide for instructions on the correct order to fasten the cap head screws