Woody,
Before you redid your brake system ... and the pedal was going almost to the floor ... was that with an older, used master cylinder? Also, is the master cylinder in the car now ... new or used?
I ask, because as a master cylinder wears over time, it produces less pressure, even though there is no leak. The brake fluid is getting past the M/C piston seals, back into the reservoir. This is when & why many people replace worn out M/C's.