RE: Hpi Sprint 2 DRIFT
Well what i was told originally about doing the rear diff mod was just to cut out where the belt is just make sure the chunk you take out is only as wide as the belt or just slightly wider like i did and i only took out like 2 and a half centimeters from the top of the differential cover so the cut goes about half way down and it leaves some rigidity to the diff housing instead of just taking out most of it out stuff still gets stuck but not often but i only did it that way because my belt was rubbing on the diff housing