getting frustrated with my brakes. did the front disc swap with a kit from vendor. 73-8? parts and new lines. went with the new power booster as well and used an old(used) GM dual master cylinder and prop valve mounted at the firewall. now the brakes work but it takes about 3/4 of the travel in the pedal to get them to engage and it goes all the way to the floor. feels a little slow to engage as well. bleeding dosent seem to help anything. i bought one of those hand pump bleeders and its bleeding fine. the lines are new and i have checked for leaks and kinks or pinches. im not losing any fluid. at a couple of points since the swap I have had full pressure on the pedal but it seems to loosen up over a few days. im at my wits end here! any suggestions guys?
