Replacing the crossfader part for a Mixon 4?!?!

Mixon 4
iOs18.1
iPad pro

I have placed an order to replace the crossfader for my Mixon 4, as it is unstable and does not consistently respond accurately when I slide it. I am familiar with the procedure for removing the Allen screws and other components; however, I would like to know if there is a specific process for detaching the crossfader from the controller.