I'll admit I've posted a related question, but I can't solve the problem, so I'm reaching out again. The HS6 SU carbs in my 4A flood after I turn the engine off, and if the car sits for 20 minutes it's very hard to restart. All this started, as best I recall, after I "messed" with two things: a) the jet needle size, and b) the float adjustment. I think the floats are fine, but what about that needle. I think I installed leaner needles, and that's counter to my thought the needles could cause my flooding issue after turning off the engine. Anyway, that's my problem. Car sits, then won't start without a ton of patience and starter wear. Until I turn off the ignition, everything runs great. But if I turn it off, and then let it sit, Heavens to Betsy, I'm not going anywhere for 30 minutes. Any clues?