try running rubbers i ran yoko's with my 7 and it didnt really like them so i stuck on some old tamiya rubbers and i had the grip to accel but with just a slight left right flick it would drift lol
oh yea if you want over kill check out my new toy i took the 7 out of the TC3 and stuck it into my mardave oval car and stuck in my 6 cell IB3800's , it is ment for running a 540 motor and 4 cells
it does massive burnouts and donuts and is insane in every way im more scared of it than the TC3 at full speed