Edelbrock 600 carb issue?

good luck with the Holley, I tried 2, one a 600, the other a 650, they both stumbled
coming off idle, even tried a 50cc accelerator pump upgrade, no go. Went back to
my 600 Edel and now running a 750 Edel. Too bad your not closer, not using the
600 Holley or 600 Edel and I rebuilt both of them so know they are good.