4cycle-2cycle
BGI,
You are lucky.
Many others wound up with peeled cylinder liners.
It was blamed on QC and fixed by the new two stage, Copper-Nickel process. It lessens the chance of peeling, but it is still wrong. It was a break-in technique problem.
Instead of changing their break-in instructions, OS made the sleeve more tolerant to the wrong (or should I write; prescribed) technique... Beating around the bush, I would say.
Sincerely,