You dont want fuel to top of sight glass, that is a sign of the wrong setting. Demons allow you to get to center of glass as its lower, Holleys need to be at bottom (just dribbling out an opened sight plug) when idling or when they are pumped by an electric pump on a stand, much safer. Post to youtube and send link. loosen lock screw and turn big nut to lower float level (seat) ...supposed to be able to do this while its idling but I always end up spraying fuel everywhere. Turn screw to lock.
