Ha ha! I hear ya man.
87 in the Scram, 87 in the Bonnie, 87 in the Tiger, 87 in the WR....
Never a problem, great mileage, no detonation, no over heating, no under heating, all elevations/temps/humidities/cosmic radiations....yata yata...
All engines/valves/carbs/throttle bodies have been...