Here's a couple of pics that are a little better. Dave, I was wondering if you've ever used an engine setup with that long of a shaft. I hope you don't take offense to me questioning you, I'm certainly no expert. It just seems to me that if anything is even slightly out of balance, the crankshaft wouldn't last very long because of the weight being that far from a bearing. Also I still need to figure something out to mount the prop. I don't have that hex nut, I just have the tube spacer. That's why I was wondering if I needed to cut the shaft down. I also have a question about mounting the engine. I have four bolts that attach the backplate to the engine. Would these be strong enough if I just bolted a plate to them and attached that to the plane? Thanks for the help.