AFB Tuning

Is there a Quick Method to Tune the Transition when you Step-On-It?
Runs Great at Idle, Cruise and W-O-T...
but during Cruise it makes a BlehBleh before it Goes when you mash it.
Choke Fully Open and Warmed Up. I wouldn't mash it otherwise.
It's a Carter 500 on a 273 2bbl engine w/ a Halifax Distrib.
Runs Great other than this One thing...
What is it?

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Author: admin