I replaced the stock pads on my Trek 4900 with some Kool Stops. No problem with the front. However, the rear ones toe in backwards (that is, not in the direction the rim travels) and they rub very slightly, at the point where they toe in, obviously. Additionally, there is too much play in the lever. This should be simple, but I can't quite get it. The pads are installed in the correct direction. I think if I can fix the toe in problem, the adjustment issue should go away. Any insight would be appreciated!