Originally Posted by
SkyDog75
The brake pad, being firmly affixed to the brake arm, should be consistent where it lands against the rim unless the rim moves.
I would suspect something like this. That said, I have found that the better the quality of the brake, the easier it is to keep adjusted I had XT level v brakes on my old mountain bike that never gave me any problems while the cheap ones on my wife's hybrid were super finicky until I replaced them with better ones