I have a slant spec Holley 1945 1 barrel, that is WAY loose..... that engine would barely run til I swapped that carb out. the one that was on my Volare originally was just as bad but back then I had a buddy that worked maintenance in a factory that could fix stuff like that all day long in the company's tool room/machine shop..... said company has since closed their doors, my buddy now works maintenance at a state park campground in Indiana, no access there to same kinds of machines.
