[davbowen]

I doubt its the fuel pump. they been around for years and typically they work or they don't. part of the problem with boiling is the aluminum parts retain the heat. it needs to be isolated. the isolator gasket is not thick enough. you need a 1/2" to 1" spacer between the carb and intake in your case intake and adaptor. I prefer plastic but wood will work to. square bore spacer are much easier to find. your local autozone should carry it. don't forget you'll need longer carb studs. your heat gasket is a squarebore and if you still use it, goes between intake and adaptor. just my thoughts....