Carb tuning, larger accelerator pump nozzle?

dano said
Defiantly lean by the feel and confirmed by the wide band, which I know is a lagging indicator.

From driving it I don't even think I'm getting into much of the pump shot if at all.

Plan of action is:
1. Confirm distributor timing including how much and by when. Adjust if needed.
2. Back off primary idle and marginally open secondary idle and test.
3. Reassess after data analysis of 1 and 2.

Justin's basic carb 101-vac secondary

Here is what you do with a vac sec carb ...
Put the stiffest spring or setting on the secondary. You don't want it to open because you want to focus on the primary and not have the secondary interfere and throw you off. Then you take it out for a cruise..who cares about the acceleration for now... you want to lean the jets till it surges 'test anywhere from 45 mph n up to 60mph' creep up in speed to again insure the sec stays closed...then once it surges a hair.. jet up 2 sizes. Check your meter if ya want. Now start dialing the pump shot for a nice smooth roll of the throttle type acceleration 'from a stop'... tailoring the pump sho includes proper lash at the pump arm, '.050 from max travel 'then go out and try stomping on it... try a power valve that's about 2" less than the idle rpm... take it out and stomp on it again. Once you get it pulling smooth till it plains out ' due to late secondary- still mostly closed with the stiff setting/spring possibly ' ...then you can try a light spring, lightest even..n see if it then bogs or likes it. Too light will bog, or can.. maybe not with a smaller size carb like you have.. but in any case.. that potential bog could throw you off course and messing with the transition when you dont need to.
For mechanical carbs primary tuning you can either adjust your throttle cable loose so that max pedal is only max primary opening, leaving the secondary closed...or simply control your foot. From there you work on wit and part to wide open with the secondaries which is about the same or easier. Any questions can be asked as to not write a novel here.
Just remember that it's a carburetor and it will always show a hair richer during the pump shot.
Have fun.