Originally Posted by garyroushkolb
I've had that happen also, what I decided was that it was taking metal off the inside of the ring groove and not making it wider. Home depot has a cool lighted magnifier that you can use to see for your self. I don't thinks it's a problem unless you take alot of metal out. What you don't want to do is scrape the lands wider as that will make the rings flutter.
That's the thing, I think it's the lands. The inner face of the groove is still carbon covered. I'm fairly certain the lands are being scraped. Although I do admit it's a small amount per land, I don't want to jeopardize combustion seal. What alternatives could I use to? I heard the piston ring method could scratch the inner face and cause more harm than good. I'm not sure, maybe I could file the ring? Please let me know.