Holley issue

Looking on Holley's site, none of the pictures of a vacuum secondary 750 have a center squirter. They look like Mopar Head's carb.

Are you running a pressure regulator? I had an issue with a Demon carb over fueling at idle and it turned out the Holley mechanical pump I had put out way to much pressure and was over running the needle and seat. Stock pump fixed the issue.