Re: GREAT QUESTION on PLUG CHOP?
Everyone wishes they had a fuel delivery system that never needs adjustments. Ask any professional engine tuner in drag racing or for that matter any motorsport. The advent of computer controlled systems in today's cars have pretty much taken the responsibility out of the owner or the mechanic's hands but you can be sure that the little electronic brain is making constant adjustments as you drive, as the humidity/temperature changes as you accelerate or decelerate, climb a hill or use cheap gasoline. Same for the ignition system.
If you're fortunate to have an older carburetor that can be easily adjusted, be thankful. There might come a day when they'll come from the factory completely sealed and become a throw-away item, like flashlight batteries.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"