[patrickt]

JLW -- the blue gaskets are reusable; usually several times. But, wtf, if in doubt go ahead and replace them. The only way a float ever goes bad is if it has a hole in it. I haven't seen a hole in a Holley float in a long, long time. But the way we tested them when I was younger was to take them out and put them in the tub with the tub full of water. Let them sit there while you eat a sandwich, then take them out and shake them. If there's water in them they're bad. If not, clean them off well and reinstall.

EDIT -- Put them so they stay under water, don't let them "float" on the top....