i bought a nitro rustler new last month, i put a 22 tooth clutch bell on it rite away and it seems to run well. i put losi 20wt oil in the shocks and 3 hole pistons and some stock slash progressive springs, i had one of the rear mini pin fly off, blew the center rite out of the wheel. i put proline dirt dawgs on, they work well. it handles better but im sure there other tricks to make it handle even better, i have a pretty nice scale track at my place and you can get it wide open in the back stretch and it jumps ok, i just keep thinking that i can get more out of it