O ringed pin? Maybe 7 is too high, I run my 4bbl at 5 1/2 - 6.
Ya... wasn't sure what to call it. just made a tapered brass pin with a small o-ring on the back that slides into the fuel line coupler on the carb, the float raises and presses on the rear of the pin to seal the line. Home job but works quite nicely. I think doing the HEI upgrade will provide better ignition and possible solve the slight over fueling issue..
It might be it's not giving a clean ignition...