Carb tuning, larger accelerator pump nozzle?

dano said
So when stopped, in 1st gear coming off the clutch and applying throttle it dips lean and you can feel the bog, then it catches up. Classic scenario you see all over the net, "X brand carb bogs off idle". Just letting off the clutch slowly on a flat surface it will bog and die with 750 or 900 rpm idle

Thanks!
That's what I thought.
So the issue is definately on the very lowest throttle positions - which means the low speed circuits.