after 2 bad rebuilt and one new powermaster unit kicked me in the nuts i installed a new booster and power brake system.installed an 87 ss proportioning valve ,although never researched if it was different than the turbo car counterpart.anyhow.even with new rotors,calipers pads and hoses and not the cheap stuff mund you,the front breaks constantly smoke when applied after pushing the car hard.adjusted the rears without any improvement and no nose diving showing unbiased apply pressure.on the lift the rear brakes are also slow to apply.installed a vaccum can and still no improvement.all new parts and the symtom to me is inadequate front apply pressure.any ideas.im fed up with a slow stopping car and my front pads smoking at every light .the calipers are not dragging for those of you who may be thinking such ,neither are the hoses .all new.any help would be appreciated.