Carb tuning, larger accelerator pump nozzle?

Rat,
So now it's my fault that you are spewing out all this nonsense???????? Chopping & changing on what affect the AB size has on when a cct starts.
Might be time to change the breakfast cereal.....
For your carburetor education, try Walter Larew's book Carburetors & Carburetion, ISBN-0-8019-5224-7. 164 pages.