carb question (Holley)

floats have been adjusted and re-adjusted - I have new needle and seats I'll honestly probably re-rebuild it here and start from scratch

manifold vacuum is around 9" at 2,000rpm (lowest it will run) it has a 6.5 PV now and I have a 5.5 to try

I used a QF renew kit and now have a Holley brand kit to redo everything again

If you are only running 9" you need a 4.5 PV. Are you sure you don't have a vacuum leak somewhere?