Master Cylinder was bench bled and then I cracked the lines to get any air that may have been left in the M/C during installation. The car does not have ABS. I bled the M/C first then the RR LR RF LF. I have been wrenching on cars for a long time and I have never encountered a bleeding problem like this. I probably have been bleeding 4 times the normal time to bleed a set of brakes. I remember an 1984 Dodge mini-van rears was a toughie but it eventually bled. I will try pluggind up the M/C. Potentially bad because it is a rebuild.