1973 Holley 1920 Accelerator Pump Question - Stumble Off Idle

Lizey93 said

After a rebuild, my 1973 225 with a Holley 1920 runs great except for a significant stumble off idle if I give it anymore than about 1/3 throttle. I have the accelerator pump hooked to the hole nearest the pivot point/inner most, is this the correct spot?

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I cannot picture that one in my mind. If you can post a picture, that would be helpful. Likely though that is correct for the strongest pump shot, but I am not certain, since I cannot see it. Have you actually LOOKED into the carburetor throat to see if it's spraying a good strong stream of fuel and that it sprays IMMEDIATELY when you move the throttle lever?