AVS2 carb tuning. Anyone with experience out there?

Yes I had the t slot dialed in the smaller carb I had on engine before had no bog until I swapped the 650 Avs . I’m not talking about the pump shot I’m talking about the squirt nozzle in the carb under the horn, with my 650 Avs until I upgraded that the carbs bog went away. You can adjust the pump shot as much as you want but that stock squirt nozzle is way too small to supply any kind of fuel at WOT. This is from my personal experience.

I understand what you're saying but the T-slot is faster at providing fuel when you open the throttle rapidly than the pump shot does. You can play around with different IAB and IFR sizes to see what the carb wants.