I just got mine running after trying a new ignition. I am very impressed with the power (incredible thrust on a Zinger 22x8), and the engine seems to be easy to start so far. I wish the mixture screws weren't forward facing so I could adjust the carb with the engine running, but with the power it produces I haven't had the need to tweak it for all the RPM I can get. My engine is serial number 009 but it has a C&H ignition and has been sent in for service before, so it just goes to show how long these engines will last. Installed in a 16 pound aircraft, it will accelerate vertically almost as well as horizontally.