Yeah the Holleys generally don't have this problem and I think its the fuel bowl location like you said. And the Holley's accelerator pump pulls fuel from the bottom of the fuel bowl where as the Edelbrock/Carters pull accelerator pump fuel 1/2" or so up from the bottom of the fuel bowl. So when the Eddie carbs percolate and loose fuel you have to crank to fill the bowl up before the accelerator pump gets fuel. The Holley accelerator pump will typically have fuel right away after sitting for a few days.