we have done the unthinkable, we installed the disc brake system in our cart. after install we have no brakes so of corse we tempted to bleed them. anyone try this yet? i know the lines were pre charged but now the are not. so, we need to charge the lines again. any easy way to do this? or am i in for a long day? what is the reason for 2 bleeder screws? help removed the rear brakes already and we have noway of stopping now!!!!!!!!!!!!!!!!