1969 Camaro 4 wheel disc soft pedal

[440rick]

Ok my first post here 1969 Camaro I have done the LS1 front brake upgrade and have a Inline tube rear disc conversion on the rear. Along with a new wilwood 7/8 bore Master cylinder. My issue is no matter how many times I bench bleed the master and bleed all the brakes I have a very soft pedal ? Every line is new Along with a wilwood proportioing valve in rear line thanks