carb tuning help

Maybe do the vacuum gauge deal.

Get the idle mix screws dialed in at 22*, then bump it to 26* and see if you have any significant difference at same idle speed. If the change is small, run it where you have it now.

I bet it fires off almost right away when you bump the starter.

Ya it fires right away. I couldn't believe how much harder it ran. I hardly touched the carb and it leaned way out just with timing.