I have a 1998 F-150 2WD with a 4.6 L engine in it and I turned my rotors and didn't change the pads because they were good and now I have a knock in the Driver's side front wheel every time I apply the brakes. The rotors are composite and I think I may have mounted them wrong on the brake lathe and the warp in the rotor could be causing the problem, but I'm not too sure. As I said the pads are good and the seals and bearings are fine. Could you help me out?