Originally Posted by Darkseid
If I had to pick the only thing I have been disappointed with on this car, it would definitely be the diffs. I just don't know what went wrong with the diffs on this car, but something did.
Here are some tips for you: I put anti-wear grease on the thrust bearings, precompress your spring in a pair of pliers , also if you get some 800 grit wet sand paper and use the diff half to hold the ring while you sand it on a flat surface
(use the paper wet not dry! ) you will have a smoother running diff. Sometimes the diff rings are warped from when they are stamped out of the sheet of steel at the factory, also the wet sand paper will put small scratches in the rings that will not let the balls slip as easily on them.