He said he cant get them to lock up on a gravel driveway at about 30 mph standing on the pedal, are you trying to kill the man ?!? Obviously there is something wrong. Change to the correct split circuit disc/drum master, and try it again.
..if the brakes and lines are new or in good repair means there is nothing wrong...changing to the correct master cylinder shouldn't kill him.He probably shouldn't try bedding the pads on a 12 lane freeway at rush hour though.
Good point.
