While the second linear rail remains loose, the Z plate should move smoothly without resistance. If you experience any binding or drag, slightly loosen the carriage screws, as they may be overtightened.

Be careful to ensure that the Z joiner plate carriages do not detach from the linear rail during the process.

Move the Z joiner fully to the front as demonstrated. Then, gradually move it toward the back, exposing one linear rail screw at a time, and tighten each screw as you progress.

Ensure that all linear rail screws are tightened from front to back. Avoid overtightening, as this may cause binding and restrict movement.

MGN15 Rails should be tightened to 98 N-cm of torque, overtightening the screws will result in rail binding.