Booster Install and Problems

[VDOG]

Ok lines ran Booster installed, MC bench blead, vacuum line installed on edelbrock 1406. When the brake pedal is applied, the truck rolls for a few more feet then the brakes grab. Its like there rolling untl a certain point then stopping the truck, as if I was slowing down the truck. But im slamming on them, in the back yard so not going far, just a few feet back and forth so at 5to 10 mph is should stop instantly, Am I correct? Isnt this why we get power brakes? It stop better with the metering valve and no booster, until the brakes locked up.