With the TX200/HW97/Diana 460, etc., style of breech opening, are fine scratches a common thing on the visible silver portion of the compression tube that slides back and forth? I've seen several guns that have them, including one of mine (HW97). They aren't very deep, but I'm surprised that such high-end springers don't have a better fit and polish of the metal-to-metal surfaces to prevent scratches from forming.