I have a MK1 Rapid from 1996, which is in very good condition. On removal of the stock there is an area of anodising missing from the area beneath the power adjuster. I cant see how its worn as it is a none wear area, and the rest of the gun is near new. It looks like the anodising hasn't taken, almost a case of out of sight out of mind. Anyone else with a similar experience on their rapids?