Thanks everyone for the suggestions. I got the new rings in after lightly sanding the cylinder with some scotchbrite - I don't have a hone. The scooter is running and after the initial burning off of the lubricating oil it seems to be working well.
I'll give it a little more break-in time and then get a good ride in (once the rains passes). If the issue comes back I'll probably just replace the cylinder.
Thanks again!
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