Fuel and ignition revamping (solved?)

The AVS2 is pretty much the same as an avs but has annular discharge primary venturies.

Will be looking into the bushings.

as for the rest I am able to lean or richer with the screws and I have tried fattening it up a bit at a few different initial timing settings. It doesn’t help much till you get to 24-30*
Was it idleing as well or stronger with the FI? If so did you have a map of rpm, MAP/Vac, and timing?

The typical Carter idle system is a bit different than the Holley. The fuel to the idle port is shared sequentially after the trasnfer slot. The Carters usually have two restrictions and a second air jet. I haven't messed with them. Its its a neat system but I can't offer any suggestions on a smart way to test or change for your engine's needs.

If 24* seems to be the minimum it likes, maybe that the baseline and experiment with fueling timing from there.