Well, my BKP dull nickel covers are actually getting shinier, not ageing. What's with these ? Is there a coating rather than plating, as my previous, bog std shiny nickel covers have always tarnished, which I like. I got the dull, (they looked great out of the box) as I was told they would age, but thats not been the case, the reverse is happening :( (These are not the brushed or raw nickel) Can anyone shed some light on this ?