Just installed new master (brake) cylinder in 85 300TD. Did bench bleed on it prior to install. Fluid was full (both reservoirs) - brakes were fine. I did NOT (yet) bleed system - (When I installed cylinder - did not "allow that much air" into lines) - Would this cause pedal to go farther down (not all the way to floor) - but further down than usual - incrementally (As I pus harder - it will give) - It will do this until I pump it up - then it might do it again the next day.

Thanks Steve