Proportion valve and Residual valve?

Thanks Guys!! Love the knowledge on here or where to get an answer. Called Cass (Dr. Diff) he said I need a drum brake system distribution block so I get full line pressure to the disc's front and rear. What you guys said on residual valve no go. Then see if it is where it works/I like it. If the back end is grabbing to much then install Adjustable valve and adjust as needed for the rear. Hope I got what he said right.

Thank You!!!

Inertia have enough experience to know I about ready to break something most of the time. LOL