Would you believe it!!? I did have one bad memory when driving the bus to the Derbyshire Dales. I was overtaking a Large farm tractor and trailer going uphill in 3rd gear with a large truck coming the other way. I was flat out and the rev limiter cut in at 3900 rpm and we just made it by the skin of our teeth. Thinking I would rather rebuild the engine than end up like a kamikaze embedded in the front of a truck I stopped at the next lay bye and ripped off the rev limiter which is a bob weight and spring on the rotor arm. Those were the days 50hp and a one and a half ton bus.