Wow! I thought I was careful around working rc engines. It doesn't take much time or inattention to ruin your day. I was going to start up and start breaking in a new TT .40 Pro. What I had wrong was the wrong throttle control on the trottle lever - a braided wire without the tube to keep it taut. As soon as it fired up, the prop blast caused the throttle to open up fully. Rather than pull the fuel tube to shut down the engine, I tried to shut the throttle down a little with the braided wire - no help. So I tried to pull the throttle lever back a little with my index finger an got my hand a little to close to the propellor arc and got a little nip on the right index finger. It only took a little while to clean off the picnic table one handed, and go to the local immediate care center. 1 1/2 hours later I had a nice new bandage and 20+ stitches in my right index finger. Next time I get my test stand out, I will have a proper throttle control rod ready for my new engine. Newbies - please take care when you start those finger eaters up.