Maybe this wouldn't make any difference, but it might be good to work on some "pre-braking" techniques so you're not loading all the heat in there in one big grab of the levers. There's no way to ease up on acceleration and pedaling without screwing up your riding style, but I suspect you're going to go through pads and rotors pretty quick. Even in my car I've perfected the idea of getting some braking done to about half speed, ease up for a couple beats to let the rotors "breath", then back at it to finish the stop. I could be wrong, but I suspect you're going like hell to the bottom of the hill, then grabbing a big handful and praying!