[lincpimp]

One thing that is often overlooked is extreme servo draw due to improperly set epa or binding in the steering system. Remove the pinion, power up the truck and try to manually roll the truck while holding the steering wheel full lock both ways. Also set you epa so that the servo is not pushing the wheels past the travel. A faulty servo can also overdraw the MMM internal bec. I have seen this happen 1st hand. Try removing the red wire and then powering the rec/servos with a rec pack.