dual esc/motor setup

[nitrostarter]

I'd definitely send the other 3 in for repairs. Castle is pretty good on that end.

Locked in 1st gear will make one hell of a difference. You may want to try that first, but your top speed will suffer. At 23:1 you'll be geared for 33-35mph. Before, you weregeared for 55mph+, which with a heavy vehicle will burn stuff up as you found out. If you want to go that fast with such a heavy vehicle, like I said, I would definitely move to a 1527 motor on 8s with either a Pheonix HV110 or Lutach 10s esc. You'll definitely want to bring the kv down and up the voltage.