Colin, you would love the new/surplus Cox .049 Sure (don't) Starts. Three hours on my first new engine to get it to start. It eventually ran OK. The second one I gave up on and on Cox .049s in general, I have a run once or twice 1959 Cox .049 that is mounted on a display only Curtiss Model D Pusher. I'm tempted someday to pull it of and run it on a test stand. I don't remember (1960) the LeRoy Cox stuff being this cranky.

Bill