kyosho inferno gt conversion questions

i just tried a 1512 2200 on 5s however i couldnt get the neu close enough with a single speed diff. the chassis brace was stopping it from getting there as the fins are to big.
so i put a mamba monster 2200 on it and it worked fine until the motor for no reason let its magical smoke free. Sucks brandnew motor 5 minutes and 139 degrees. needless to say im waiting on the replacement now. it would seem the inferno gods dont want me running this car.