Porportional valve adjustment no pressure to rear cyl

[Furno68C20]

I know the proper way to bleed brakes is to have all lines connected. I only disconnected the rear to see if I was getting fluid out of the back of the combination valve.

If you look at the ends of the body the front spring has a threaded plug with a little nipple sticking out and the rear spring is held in by another fitting like a 7/8" brass nut. Are these fittings supposed to be snug to the combination body or back out a few turns to adjust spring pressure? Are these plugs/fittings there to change out the front and rear valves?

I think I have a push rod clearance issue so I'm going to take off the master and see what kind of clearance I have from the master piston and booster rod. Hopefully there is not pre-load from the rod to the MC piston.

Ill keep you posted, we'll get this done right. Appreciate everyone's help