My issue is: I’d like to see a much more stable needle. Before the cam swap I was rock steady at 17-19 inches. Now I’m getting a rapid vibration between 20-16 inches of vacuum. My idle doesn’t sound perfect either. Tomorrow I’ll once again use my temp gun. Last time I found a broken spark plug and when I replaced it it dramatically improved performance. I tried to set valve lash hot but it’s so noisy it’s difficult to hear the clacking. I may well do the lash over Intake closing -> adjust exhaust valve Exhaust opening -> adjust intake valve Plus one full turn as per Comp Cams instructions. When I film in slow motion the needle drop is extremely regular. The carb being EFI there’s not much to do there. Just the ignition.