Reply to "Stumble off of idle - Seeking advice"

Fair disclosure, I'm far from a carb expert.  But I spent hours tuning the formerly Holley became Summit carb (750 cfm, I had the vacuum secondary version) for my 80 F-250 Windsor swap with some cam.  I had the same issue.  I did also upsize jets, mostly secondaries, which in my case also seemed to help some though logic eventually kicked in and I knew I was already plenty big there :^).   But the most dramatic improvement in my case came from lightening the accelerator pump spring (I think I ended up going with the lightest from the kit of those I had bought, it was a skinny white one as I recall).  Still wasn't perfect, but MUCH improved and "quickly."  Obviously your mileage may vary, as they say.