I have an 85 Berlinetta Coupe that had old style 14" rallies. I recently changed them to 85 Z rims. I have the front and back correct but the front studs do not seem to be long enough to fully thread the lug nuts on. I don't have stock lug nuts for the Z rims... is this my problem or are the studs for a Z longer than the coupe? Thanks for the help.