Anyone use reverse injection brake bleeding?

I am having a hell of a time trying to get any brake fluid out of any of my bleeders. I replaced all three flexible rubber lines and threw on a rebuilt master cylinder. I bench bled the master cylinder and used a vacuum pump (compressor type) at all the bleeders and can't get any fluid to flow. I had my friend pump the pedal and same story. The fluid resorvoir was full the whole time and never got low. I am wondering about the "Phoenix Systems" "Maxpro" and "V-12" model reverse flushing guns. I'm tired of buying crap that doesn't work.

 

I have bled quite a few cars including this truck and have never run into this before. I can't even get a sputter of brake fluid/air at any of the wheels. Is there some sort of "reset" recenter type trick for the rear load sensing proportioning valve or anything? I have the factory manual and the Haynes, but couldn't find any special bleeding techniques.