I must admit that I started this post by mistake, as I clicked the wrong button, but I'm glad it's going somewhere. Another area to be concerned about is that the elevator stays on when you crank up the rpm's in the pits. A couple of guys have told me the elevator can come loose, but I've yet to see it happen. Our club president had to go to the hospital ( sorry to embarass you, if you know who you are ) this summer because he got a bad prop cut in his leg. And, yes, I use light sandpaper to sand the trailing edge on props because if the engine's warm, I'll flip it, but lately I've been getting hit by the kickback, so now I use a chicken stick, but I have no qualms about using an electric starter. I rebalance my props, too, after I've painted the tips.