I finally got the shims for my diff so I could put my rig back together. I was bashing for quite a while when suddenly the truck just shut off. I summed it up to voltage cut off and didn't think much of it. When I was replacing servo gears it attempted to power it up to center the servo but it wouldn't power up just flashed a very dull red light. So I grabbed a second battery and attempted turning it on with the same results. Any ideas?