[CWizard]

Could someone please help with this problem: When I pop the throttle open from the idle position, I get a momentary hesitation, then it goes like stink. My research says this is most likely a momentary lean condition which increasing the accelerator pump shot should fix. So I have increased the primary nozzle size from .031 to .035 and now .037 with maybe a small improvement. I don't think I'm into the secondaries when this problem occurs, so I haven't messed with that nozzle. So should I just keep increasing the primary shooter size until it gags on too much fuel, or is there another culprit that I need to consider here? Timing? Engine has 6600 miles and timing has not been touched since initial dyno. Carb is a Holley 4150 HP double pumper with mech. secondary. Any suggestions will be appreciated, even one to get a Demon.
Thanks.