Excessive clearance will have very little to no effect once the engine is running on the main circuit of the carburetor.
Perfect explanation. That knocks one thing off the list. My symptom is the opposite. Good idle and mediocre running on the main circuit.
I did a compression check back when I first got the truck. That’s been a while (although not much run time) and wouldn’t be a big deal to repeat. I will do that ASAP. Never have done a leak down test
However, in the meantime....wouldn’t the good vacuum reading and ability to idle smoothly at low RPM tend to point away from a major compression issue?
