I am new to the site and still getting use to loking thigs up but i have a question im really needing help with and im sure its been covered befor im srry well here it goes...... i have a revo 3.3 with a os .18 and the primary gear keeps spinning and breaking the pin now i have replaced this about 5 times now im wondering is there something im doing wrong or is there any upgrades for this problem?? I have another revo all custom carbon fiber that i put a picco .26 max jl red dot and i havent even started yet cuz i already know its going to blw that gear as well. Thnaks for the help