Just finished my build and ran it a few tanks with a axial 28. I think I will be putting a sts d30m in it soon, I don't race but am thinking of turning some track time and seeing how good I can drive then maybe with a lot of practice I'll start racing.
I used a jr z900t srevo for st and 7k-15k-5k diff fluid set up and seems to turn pretty good, granted I'm useing stock ss set up (15d. not 13d.)
great thread by the way, alot of good info