Hopefully someone can offer some assistance, video attached describing and showing the issue.
X-Axis motor goes into a high pitch squeel after stopping motion (not normal motor whine) & loses steps
when swapping the cables on the x and y motors, the x motor moves and sounds clean, while the y motors show the issues above.
Using the Mrambo that came with the kit, pwm_motor_control is unaltered.
Hopefully that provides enough info for someone to help.