Hey everyone, i've been lurking around this forum, and it's been great =]

I just finished building my Tb-02 tamiya, and noticed a problem with my first run. The wheels would spin, but there would be no torqe at at, and after reading some threads, i noticed my front and rear differentials were just loose...very loose. After tightening it up, it ran good for a few runs, but then it loosens up afterawhile. The problem is that after a million times of tightening it, the "Cap Screw" (the rod) became stripped..so now I can no long tighten "or even take out" the rod because it's stripped clean from my hex wrenches. Is there anything I can do guys? or would I have to buy a whole new diff. setup? which i would need the bearings, balls all together because i cant take mine apart because of the stripped cap screw..I hate this part =/ Thanks everyone!!