Help. Disk brake conversion bleeding problem.

[sbc10guy]

Hi guys i just installed a front end rebuild kit and disk brake conversion from cpp. I used a booster mc and pv kit from a seller on ebay. I have it all installed and i bench bled the master cylinder on the truck with the supplied plugs. I went until i had very little pedal movement and no air. I then hooked up the lines quick and tried bleeding. I cannot get any fluid to the lines even with my hand pump kit. I tried bleeding the rears and got plenty of fluid. My problem is it sucked the fluid from the front resevoir to the rear and overflowed it. So the transferring problem and nothing to either front line is my questions. When i installed the booster i adjusted the linkage to fit the pedal exactly the same. Does this sound like i need to adjust that differently or do i have a faulty part/ incorrectly going about things. Any input appreciated. I have never had this many problems with brakes. Its driving me crazy.