If motion is not smooth, it is not aligned. If not aligned adjust the position
of the Y motor until the coupler can slide back and forth smoothly.
Note: If it is not possible to move the motor then slightly loosen the four
mounting screws.
15. Hold the motor in place and tighten all screws on the frame.
Re-check motion of the coupler.
If unable to slide, repeat step 14.
16. Ensure the flat surface on Y motor shaft and back rod face upwards
and two grub screws on Y coupler are directly over the flat surfaces as
well.
Move the coupler forward until it almost covers the flat surface on back
rod.
