Hello all just want to make sure I'm getting the correct part. So our linde standup it seems as the wheel direction is not recognized. We will have it going one way then it jumps directions and then corrects itself. Once we jack it up and moved the turn handle the wheel goes all over the place leading me to believe that the wheel direction isn't registering to where it should be. I looked at the manual and there is a potentiometer that I'm wanting to replace. Its 900 bucks though so I want to make sure I'm on the correct path. Any and all insights will be appreciated.

MODEL: L 16 S03
SN: H5X139K00087/ 1999