Boosters don't flow at idle and that's where the PVCRs flow the extra fuel.
Put a fuel pressure gauge you can see or video. Laying down on the big end may be lack of fuel flow.
I would also get rid of the 10 year old tires.
I may be confusing the possible PV issue with having a blown PV? Is that when it'll run rich at idle?
I shifted about 5800, but it was going to about 6500 in the traps, and maybe is pulling vacuum and closing the PV, if I'm thinking right.
Post #9 explains my fuel system, of course, there still could be an issue.
