Looking for some insight here. I have the pro ball and installed it only to have it strip out the gear in a very short time. Literally ran 10 feet at part throttle and it was toast. All new bearings installed at the time so that wasn't an issue and no other binding or anything. I contacted traxxas and they were less than helpful and don't want to warranty the brand new product. So my question is did I do something wrong because I installed the stock diff and it works flawless? Is the plastic gear that bad?