Carb tuning, larger accelerator pump nozzle?

Bewy said

Rat,
No I don't have it backwards. You do. Read post 57, it explains it.
Making an air bleed, any air bleed, bigger weakens the signal to THAT circuit. It therefore takes more airspeed [ bigger throttle opening ] to generate enough pressure drop to pull fuel from that cct.

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Sorry my friend. A bigger MAB will delay the start of the mains. That’s the simple result of it. It will also lean the fuel curve at higher rpm. I understand how air bleeds work. Again, a bigger MAB will delay the start of the mains. A smaller MAB will start the mains sooner, and will move the fuel curve richer at rpm.