Look at it this way- if you get "free starts" your engine is well-tuned. Free Starts give you bragging rights. Not everyone gets 'em. I hope they continue.
While doing this testing, make darn sure that you don't accidentally allow DC voltage to enter the mag post. If your magneto is alive now- it won't be after the accidental DC voltage makes contact. The magnets will be de-magnetized.
Just a friendly warning. I wish someone had warned me!