Thanks for the tips guys. I crawled under the car yesterday to look at the porportioning valve and found the side that has the inlet to be wet with brake fluid. However, this side is on top, and if it had air inside, it should bleed out like the fluid does. It's very diificult if not impossible to get a wrench between the frame and the
oil pan to tighten fittings, so I'll probably replace the whole line from the master cylinder, tighten the fittings when they are below the frame, then push everything up leaving the MC end free. I'll also replace the line from the tee to the left front caliper as I think this is where I lost a hard pedal. I keep checking the connection to the rubber caliper hose and find not wetness.