Pete ,
Confession is good for the soul! Good story.

Many years ago I had just pulled a Super Tigre S40 from a plane for a little work. After finishing I mounted a prop, gave it a shot of WD-40 down the intake and , out of habit gave it a flip. iT STARTED! No plug heat, it was in my left hand and running at full throttle. Never realized how fast they heat up. I was very busy trying to figure out which way it would go when I threw it. Seemed like forever but it did stop before I figured out what to do, or burned my hand. What a surprise though. I don't think ducking was an option.

Hard starting was the reason I pulled the engine from the plane.