well the leverage thing isn't really working

I even tried haveing only the back or only the front brakes hooked up and i cant even get them to work by themselves. im thinking about swithing my high torque servo to the throttle/brake just so i can get the thing to stop. im not even sure if that will do it. i've already ran into 3 or 4 parked cars with it! this thing is so fast i think i might destroy it before i get this figured out. I'm almost afraid I'm gunna strip the gears in the standard servo thats in there, its working so hard and can barely move, the server throw on the brake side is set at about 25%.
Defm~ is confused