i have a TT-01, but my LHS (venture hobbies) has no stock of the parts, and will not get them for me (cause my main drive gear is shot). Where is the best online site to get them from, because i looked on tower hobbies and couldn't find the part i need. And what were the first things you upgraded, mine is 2 years old and only new thing is a stock revenge of the monster motor, so i want to know if i should just sell the TT-01 and get something better or if the TT-01 is upgradable to the point where i can actually race with it.