Originally Posted by wes 17

Pilot air screw inwards will richen. If it is more than 2 turns out for nice idle then a smaller size pilot jet is required. Carb' metering systems (pilot jet,throttle valve, needle jet-jet needle, main jet, choke circut) overlap each other so to get her to run right all circuits must all be able to work together seemlessly. If it doesn't, somewhere on your throttle you'll notice it.
Thankfully here in U.K, I never have this issue. Bet it's a pain in the rs ! Hope you get it sorted mate.