I believe it is indeed the passenger rear. The front seems ok, just the slightest bit off, but the rear is noticeable. It's not a huge difference but you can tell. Also I noticed that the right rear tire sticks out just a little further from the wheel well than the driver side. Could this be part of the problem? Can I loosen the leaf springs from the axle and slide it over? Or would that be a bad idea? I doubt it would fix the uneveness, but it should be centered, right? I had my dad follow me and he said she drove nice and straight, no dogwalk.