wow, I never had trans/axle issues with my super.
Anyway, its not that old so fill out redcat's warrenty form (if you havent already) on the ESC and radio.
Does your have the FM, or the 2.4ghz radio? The FM's were not that hot, but the 2.4's tend to work good.
Another option with the ESC is the outcry duel motor ESC from RC4WD. its $60. It can handle upto 4s lipo! It has drag brake, no delay reverse, and turbo BEC. Turbo BEC makes it so that when you are on the throttle, the servos still get full power.
http://store.rc4wd.com/Outcry-Crawle...BEC_p_664.html