I have new craddock fiberglass brake rotors but they dont fit snug enough to my center diff, they keep binding the front half of my car, has anyone else dealt with this?

basically the outdrives from the center diff dont hold the rotors tight enough to keep them from rubbing on the bottom of the rotor slot


anyway, I need some ideas, Im at that "stuck staring at a part for 30 minutes" stage...[>:]