Jerome - I would advise that you remove the carb and disassemble it completely and blow out all passages in the carb as well as making sure there floats pivot freely when you reassemble. There has been reports of machine shavings inside BG carbs in other forums. If you are having fuel spilling into vacuum ports, the only place I can see it coming in is through a Power Valve, bad or wrong metering block gasket or, potentially, a flaw in the metering block casting.
As was said in another message - you can do irrepairable harm to your engine via cylinder washdown (excess fuel washing
oil from the cylinder walls) if you continue to run it this way.
I typically set BG Demon float levels between the bottom and 1/3 up the site glass with 5psi fuel pressure.