My XP-80 joystick is a little messed up. When it is resting in center position, the pitch is actually a bit low. I have to move it right a little to get it on pitch. How expensive will this be to fix? How much work will it take? It feels like it is working fine, just whatever inside there giving signals to the keyboard is messed up somehow.

BTW, it is not any system settings or any settings in the keyboard. Factory reset does not fix the problem.
thanks