I'd like to know what Solo says about it too. Unfortunately, the company no longer manufactures moped engines. They only manufacture weed wackers and lawnmowers, I think.
KKM was the last company to own/build these mopeds, but they went out of business sometime in the past 2 years or so.
I had to spend over 20 hours on the internet searching for information on these mopeds, and I couldn't find anything, pretty much. So I did the next best thing- learned all I could about these engines. It took me to connect with a few guys that knows about these to learn what I did.
These guys got sick of being the expert, so they disappeared. I guess I took their place, for now. :o)