AVS2 tuning

You said your hesitation didn't begin until you leaned the primaries out enough that you were cruising at 15:1 (if I'm reading your thread correctly). I've found that most of my carbed engines don't like running at 15:1, so I tune them where they run best, and then check the air/fuel. Most of the time, they end up at 14-14.5:1. Otherwise, you could open up the idle circuit a little, as Bewy mentioned above, but running it a touch richer and keeping an eye on the plugs would probably get you there without having to get out the pin drills.