After finding the tread about upgrading brakes, I would be very appreciative if anyone could help be out! I have a 92 NA. I installed 2012 Audi S4 rotors on all four corners, custom hub rings, OE 92 front calipers on all four corners with custom relocation brackets, braided lines, and a Wilwood spot E-brake. OE master cylinder and prop valve. Here's my problem. I have almost zero clamp pressure all the way around. The front is stronger than the rears but still like I said before almost no braking. I bleed the system over and over using traditional, reverse, and vacuum methods. The pedal pressure is very soft and goes all the way to the floor with the first one or two strokes. A little more pressure after pumping a couple more times, but still very little clamping pressure! I also replaced the MC with a new OE 92 one just in case it was bad. Also tried bypassing Prop valve. Still nothing! Would a bigger MC bore help with more flow? Is there too much space between the caliper piston take up with the pad and the rotor? My brain hurts!! Any ideas to try before I scrap everything and buy an after market big brake kit $$$ Thanks!