Actually, as rccartips said, it already had a lot more weight over the back wheels. So that was never a problem. The problem was keeping your steering. with a rwd, you always want to stick the rear, but it was so hard to stick the rear, and keep your steering. We ended up placing a lot of lead in the front of the batt compartment and over the nose. You gave up so much time waiting on the car to rotate, the FWD would speed away. Or vice versa, you had too much steering, not enough back traction, and spun out when getting aggressive.