I have an OFNA 9.5. Anyway, the other day my rear shaft cup came off and the center dogbone fell out. I fixed it, all I had to do was tighten the set screw again to hold it in place. Anyway I think my rear diff is not functioning properly now. With the rear wheels off the ground if I spin one the other is not going in the oposite direction. In fact I get no movement at all from it and the dogbone is not moving either. What should be the first thing I should check try and fix this. thanks

Wheres all the experts?

Taken a vacation apparently I'm entering the realm of 1/8th scale buggies when i get my 9.5 friday or saturday. Until then i'm sorry i can't help you very much!

Open up the rear gear box and take out the diff. Check to make sure nothing in there is missing or out of place or broken.

And check your pinion gear in your gear box..it might be stripped or misaligned as well...also check your gearbox's bearings...they might be bad.

yeah, u broke it u silly doofice head. lol j/k