Just looking for troubleshooting tips for error code 129. Pot 4 is mechanically aligned fine, steer chain tension is good and no other codes pop up but 129. The truck will throw this code randomly while sitting un used. I also noticed that the drive tire likes to come out of center pretty easily. How can i test BRKS 2 to see if pot 2 and 3 are flaking out on me?. Any infor is appreciated on this! Thanks!