Brake issue #3567.8

[MalibuKasey]

Im irritated....
So I redid my brake setup when I dropped Buttercup....
78 front calipers, dust shields and hoses. CPP powerbrake setup with CPP front rotors. New front lines, and a few others here and there.
SO.... Its been working great for awhile now. Driving the truck almost everyday unless the cats and dogs are pouring cause lets face it 66 wiper technology sucked. (which is there a different switch or motor I can run)
Saturday I pull in the driveway after driving it all week and the brake pedal goes to the floor. Stops the truck...but the pedal wont return, pull up on the pedal and and we are rolling again. So I shut the truck off pump the brakes and the master holds pressure. Turn the truck on after one pump same thing.... To the floor and the pedal wont return.
I have already had to replace the master once because of a leaky rear seal.

I know someone has dealt with this before.... a little help would be great