[lincpimp]

Just a thought, but it will handle and jump better with the battery farther forward on the chassis. If you could put the battery in the fuel tank location and the brake servo in the back, or behind the center diff sideways next to the rear brace, it will most likely be better.

I experimented quite a bit with battery placement, and further forwards always made the trucks steer better, and jump more level. Rear battery placement caused nose up jumping, and weak steering when on power due to weight distribution.