I just got back from our 3 day Nationals event, the truggy was performing flawlessly all weekend untill the semi final when about 20 laps in the rear diff went. I was expecting a case full of stripped gears by how it felt but today when i pulled it apart everything looks fine. I dont fully understand what has happened, is it something like the case has deformed slightly causing the gear mesh to open up? I have put some of the alloy case inserts in and moved one shim from left to right on the diff, put it back together but is still not exactly smooth. Do i just keep shimming till it gets better or is there some tricks to all this. Disappointing as things were going nicely till the diff went