Brake problem

[jtm311]

Just upgraded my 69 camaro brakes to C5 fronts and a new MC/Booster Shown in the photo below.

Here is my problem, I can bleed out the fronts no problem but the rears I'm getting no fluid.

My MC and booster came with two rods a short and long which goes between the MC and booster. I used the long one. Not sure if this is the problem?

I pulled the line of the back of the proportioning valve and pressed the pedal fluid came out no problem.

John