[Bob In Ct]

Steve-o:
I don't know much about carbs but I do know this -

When you open the throttle plates quickly the air (not being very dense) rushes in almost immediately. The fuel however (being very dense) takes a while to catch up. That is why carburetor have accelerator pumps. They supply the fuel needed until everything else reaches equilibrium. I would make sure the APs are working properly before I did anything else.

Bob