Hopefully @MOPARMITCH will chime in. Class reunion coming up next week and I needed Rick to drive his truck in the parade. It was running as rich as Trump 5 years ago. I'm surprised Rick hasn't found a carb. (off to ForTrucksOnly) LOL
Holley are actually a fairly easy carb to rebuild. Like any carb dirt is their biggest enemy. Never run out of gas with a Holley. Has been my experience.