Problem with Mighty Demon 750

Best to get a set of small twist drills or wires and use calipers to check whatever fits snugly in the bleeds. Any markings would be on the bleeds once you screw them out. I wonder if these have been drilled out.

It looks like someone pulled the restrictors out of the metering block before you got it or drilled the snot out of the holes. See if those vertical sets of 3 holes in the metering block are threaded or of there are tiny restrictors in those holes (that don't show in the pix); if the restrictors are not there.....no wonder it is pouring fuel everywhere.

I'd be measuring every restriction and jet in that thing. I got a carb that had been jetted up a lot...... that's ALL gotta be fixed up to match the numbers in post #42 before putting this back on the car.