Problem with Prop Valve/Metering Block

I have the same exact problem no fluid out the back and brakes up front. I replaced all line master,wheel cylinders and all new lines including hard lines. I also replaced prop. valve and hold off valve. I was gonna try something else this weekend. I ordered all the line and vavle from Inlinetube. I called them and they faxed me the instructions on bleeding the prop. Valve so I just need to try it and see if it works.