[fortyfords]

When you are having this much trouble, you don't want to use a vacuum pump, you have to have pressure so you don't draw any air in through a minute leak. Otherwise you will be chasing your tail forever. You are probably getting the bubbles by air being sucked in past the threads of the bleeder screw and a little bit from where the bleeder hose is connected to the bleeder screw. So remove the bleeder screw and put teflon tape around the threads and screw in partially, Blue monster on the threads is good also. Once you get no bubbles, that bleeder can be screwed in and go to the next one. Don't pump the brake pedal either, just have someone hold the pedal down lightly. Give that a try