I've been having problems with the brakes in the vette. I have bled them several times, but i am still getting hardly any pedal. When i go to slow down, i have to slam the pedal the way to the floor and it takes a while to stop too. I just put a rebuilt master cylinder in last spring, so i dont know if that could be the cause. The propotioning valve is good to, i kno thats a common cause. Anyone else have this problem or know how to fix it?