...I was running the MM in the E-Sav with a 9L on 20/66 gearing (12 cells) and it was ok...Little warm though...Goes MUCH better with an 18...22 and it would shut down just by sitting there...This was WITHOUT an UBEC though...Still waiting for one to ship from ebay though...
A small 40mm fan would def help with the heat issues.. what temp are the motor?
phil