Recurrent air leak at base of carburetor

That sounds interesting. I've not seen one. Can you post a link?

Like was mentioned earlier, I always use the thick gasket with the plastic grommets that keep from over tightening.
I could take a picture of an old one, but I don't know how to do that on fabo. send me a pm with an email address and I'll send you some pics. They used to come in rebuild kits, and years ago, I bought about a dozen from MA mopar. They had a part number back in the 90's.