Are the accelerator pump nozzles changable on 1405 Edelbrock carbs? I noticed that if I blip the throttle hard enough ( this is on a 1969 Charger 383 4bbl stock squarebore iron intake, 4-speed trans in neutral) I get a stumble. No backfire, just a momentary stumble as the engine revs up. I thought the accelerator pump was running rich so I set the pump lever to it's leanest setting (what I think is the leanest setting- the bottommost hole in the pump lever), and while it seems to have helped, the stumble is still present. I'm trying to figure out how to lean the pump out further- is it possible to change the jet size on the accelerator pump nozzle to something smaller, or does something else need to be rejetted/adjusted?
