this is just post about something ive figured out when it comes to fast traxx and there gears, if the gears are not stripped and the only problem your having is it pops into neutral after a few feet or when hitting a bump the only problem is the small tab on hi/lo selector has broken on the inside, very easy to fix if you have a spare selector like i did and if ya dont, its a very small piece that could easily be made to fix yours, all it has to do is hold the selector in place