ive been runnin my 2wd slash with a 3200kv tacon and it ran pretty good, so i thought id put my 4600kv castle on it and man the difference. the only issue is i only get bout 12 minutes before it reaches 175 deg. gonna go back to a 90t spur. im running pede tires and rims on back and plan on getting either mashers or trenchers. any gearing recomendations.