I wholeheartedly disagree.
When an internal combustion engine runs excessively/extremely lean with an air to fuel ratio in the high 14’s it is borderline not running. Any leaner it will not run under load. Also it makes excessive heat! (Recall how some owners think the cure to fix their heating issue is a radiator cap with a higher pressure spring?).
When one simply corrects the air fuel ratio (richer in our case) and the engine runs smoother and cooler, it is a lean condition causing surging not gearing, riding style, rpm’s etc.
I promise that there is only one reason that manufacturers set these engines up so lean and that is to appease the EPA authorities
It takes a Troll to see a Troll.
This isnít my first rodeo, but it is the first one with real clowns...