4 wheel disc on 74 Duster - Prop valve?

The pics didn't really come out. It's like there's no way to get a phone or camera in there to get a good picture.
I'll try to describe it as best I can, but all I did was unbolt the rear brake line from the stock proportioning valve, screw it into the adjustable valve and ran a new loop of brake line between the proportioning and the adjustable valve with enough line to loop up where I can adjust it from the engine bay....
Pain in the but to bleed, but it works...