I just got finished bleeding my brakes for the 5th time after converting from front drum to front power disc brakes. The pedal is low and soft, and it almost feels like the brakes drag after releasing them. I have the rear proportioning valve screwed counter clockwise (so unscrewed as far as it will go to decrease). I have to push the pedal to the floor to get it to stop and its weak. I have not taken it past my long driveway for this reason. My kit came from chockostang, I used his new pedal, new rod, MC, & booster. I have good vacuum as well. I have reviewed the entire brake line system and cannot find any leaks, my MC stays full as well. Any ideas on a solution to these symptoms? This conversion has been a long project, but i'm dieing to take the mustang on the road with adequate brakes once I can get it goin.