Check that your metering rod pistons are operating smoothly, they can get sticky and cause such transition issues.

Great tips fellas. Thanks.

I had the AVS apart yesterday, before reaching out on moparts. I cleaned up the pistons but not the bores in the carb. The metering rod on the passenger side was worn bad and the spring holding it was out of position and off the rod. I used a set of rods out of a 4429S. I also adjusted the floats to parallel with the top to increase the amount of fuel in the bowls. Overall that whole process seemed to richen the whole shebang up ... which is what I would expect. I adjusted the secondary air horn since I was getting a bog and smoke when matting the pedal.

The air/mixture screws are adjusted very far out. More than they should be in my opinion. When screwed all the way in and adjusted 1 1/2 turns out, the engine won't even start. I figured adjusting the float level and cleaning the emulsification tubes etc, along with fixing the needle/piston would make things better. If anything I am a bit worse with the same hunting problem and now and enrichment problem when throttling up.

I need to mention also that this is an original carb that has the single air bleed in the center top but now also has the two mixture screws in the bottom as well. Also, The emulsification tubes in the carb have only 4 small holes each. That indicates to me that the engine should be pulling a solid fuel mix to the idle circuit slots/holes. I am confused as to why it takes so much outward adjustment to get it to idle right.

I will follow up on the tips provided. any other insight would be appreciated.

what I would do now is set all the carb settings back to OE specs

Bad advice without knowing if his gas is E10 ...

I know this is not how you operate, but please tell us you have fresh gas in the tank and not some years old stinky stuff with additives poured in it to make you feel better.