Hi there. On my 1940 chrysler it still has the 11" drum brakes. They feel good and stop the car well but my issue is the pedal. If i dont pump the pedal first, when i apply rhe brakes and im down near the floor. It stops good but feep i wont have much more travel if something jumps in front of me. The master cylinder is floor mounted (at the pedal) would tying in a brake residual valve help this? With 4 drums to the master cylinder would a 10 psi work or do i need higher? I want the pedal to start feeling pressure when i start to apply the brakes not like 1/2 - 3/4 way down.