i see good input.. um thx for the info on the mity vac? is this something that has to be bought offline or can it be purchased at discount auto? and i just tried bleading the friggin thing.. i was out there for about an hour.. pumping and cracking nothing. it dosnt want to get hard at all... im really at a loss for words.. cuz i know how to bleed car brakes but these just dont seem to want to work.. any problems it might be?