I purchased the economy 5 lug conversion package from Ford Racing. It came with front rotors, grease seals, rear axles, and rear drums. I completed the conversion and when I went to install a set of OEM 2002 Mustang GT 5 spoke Bullit rims I ran into a problem with clearance on the front rotors. The wheels wont mount flush to the hub on the rotor and the grease caps knocked out the center cap on the wheel. I figure I need about 15mm to clear everything. Any suggestions? I called Ford Racing's Tech hotline and they were not very helpful.