I know a guy who is missing the tip of this thumb from adjusting the needle valve before most of them were "remote". we had a guy lose the tip of an index finger (buy it was sewn back on) with a warm engine and the prop hitting a compression point. I don't know the whole story, but I think he was picking his plane up after a flight and hit the prop. I also saw a guy accidently hit the throttle early when holding a Zagi too close to the prop. That just left a HUGH gash in his finger and a bad scar.

Zee