I now know why people make such a big deal about props. I just got a used plane. I decided to fire it up just to hear it run and tune it a little. The engine fired up quicker than I expected and I got a prop right through my palm. It hit hard enough to kill the engine. I looked down to see my hand is stuck to the prop and 2 inches of it is buried in my hand. I had to slide it back out. Once I was finished unleshing all my fury on the prop I could only laugh about how stupid that was. Not a highlight of intelligence for me. I will now paint those prop tips.