Oh, sorry for the confusion.
It's not scratching the cylinder, as in making long scratches of damaged metal, but rather just making a scratching noise, like when you run your nails over those plastic image-changing card things.
Some flakes of the Teflon Coating seem to be coming off, but I'm not sure if that's meant to be like that.
So would you say just see if I can return or exchange the cylinder for a Lonex one?
Is having the Lonex PH on a MB Piston okay?
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