Tail cone coming out of the transmission with the exit point for the driveshaft to the rear wheel assembly. Anyway, the four flanges on that cone have two bolts on each at twelve o'clock three, six and nine o'clock positions and every one is broken. Doesn't seem to be any fluid leaking or anything I was wondering what could have caused this...? I was told that it is part of the entire transfer case as a unit and is not available seperately. Any advice?