Convert to replaceable idle air bleeds?

Sounds like you have some room to shrink down the IFR’s. That’ll move your idle screws out a bit and reduce fuel to the TSR slot. I tend to start around .072 on the IAB’s and adjust from there. Usually the big cams need to be somewhere in the 13 range to get any idle quality. Then the trick is keep the cruise from going rich. Personally I’ve had good luck with the lower IFR. The carbs I’ve moved all worked better. Doesn’t mean it’ll work for everything. That’s just my experience.