Holley stumble trouble

Hysteric said
He stated earlier that the stumble developed when he connected his vacuum advance. Measure vacuum in both states.

It still stumbles with the vacuum pod disconnected and plugged. I’ve tried adjusting the pod from all the way in to all the way out. Still there.

Hysteric said
Have you driven the car on the transfer slot only? i.e disconnected the pump shot altogether.

No.