So i got a tmaxx 4909 with the 3.3 i used it a few times and it ran ok untill the last time i got it run right. What happened is it rolled over and the engine reved really high. I flipped it upright and gave it gas and it didnt move. The spur gear was toast.. So i put a new one on nd tighted it up ( this is all new to me so i didnt know it should be loose on the clutch) i started it up and it went about 10 feet and the gear stripped out again. The truck wants to take off the minute it starts ( is there no neutral ? ) it also seems like it is reved wayy to high from the start. So this last time i put a new gear on looser but still had some tightness to it. It started up in its really high rev like always i gave it gas and it went but seemed like the gear was spinning way wayy to much. So i need help trying to fix the whole spur gear thing and why it sounds like its gona blow up when i start it from reving so high. The engine is stock i do however have a aftermarket metal pipe on it that is much bigger then the plastic ones. I am open to all advice as i have no clue what im doing... Thanks in advance !!