I dont have access to a known good 1 barrel carb, though I do have a good 2 barrel!

I had been thinking of buying the transdapt adaptor to make use of it. It's only $15 at summit racing (plus about a million dollars to ship it to me!)

The only downside is that the carb I have is a Holley 500cfm. Way too much for my little engine! But may be worth a try!