Mahindra tractor loaders ML266

[rancher56us]

I have a problem with the joystick, the valve keeps turning and backs off the screw enough that eventually causes it to break. I think it's a bad design to start + I can't find parts to replace. The tractor is a 2010 5530. Any idea where I can find parts.

 

[kneedeep]

locknut, lock washer, locktite