Quote: I haven't tuned a Carter to the same level, but I think the idle air bleeds would have to be reduced in size for a richer transition circuit?
Making the air bleeds smaller will pull the fuel out of the booster faster, easy enough to pull a set screw in the air bleed location and drill to what ever size you want and you can always change it later.
The 750 on my Duster has been tweaked like this on the secondary side, throttle response when the secondaries snap open is extremely crisp. I don't see why you can't do it on the primary side too.
