So I've been working on swapping over from an aftermarket rear disk brake setup to an LS1 Camaro disk brake type for the last week or so. I finally got everything bolted up and started gravity bleeding one of the calipers but in my infinite wisdom ended up letting it run dry so now the pedal pretty much goes straight to the floor. I know that means I'll be having to most likely remove the master and bench bleed it but my question is that shouldn't using a vacuum bleeder on one of the caliper bleed lines work instead? All bench bleeding seems to be is simply recirculating fluid to remove the air. Is there something in the master that prevents fluid from going to the lines even under vacuum if it runs dry?