M-3075-D Control Arm Ball Joint Nuts August 10, 2005, 09:05:28 PM While I did torque the ball joint nut that came with the Ford M-3075-D control arm, I discovered today the nut came off somewhere. :hick: Probably should have retorqued after the first 100 miles... I didn't like the nut that came with this new arm in the first place, instead of the metal pin to make sure the nut could never fall off, the new nut has some plastic in it. I guess the theory is the plastic crushes and keeps the nut captive?Well, it didn't work for me. and the nut from the old arm has different threads. Has anybody found a better nut (with the cotter pin) to replace the nut that comes with the arms? Does any nut from 94-00 Mustangs work on this M-3075D Ford Racing Control Arm?