I've been noticing on a Kristin flap satchel in brass/brown that I recently got at the outlet that one of the brass rings looks like it is wearing off. I thought I could clean it but to no avail. Also is happening to the zipper on my Madison leather accordion zip large wallet that I've only had for two months. Is this normal? I wanted to buy a Lindsey in saffron with the new PCE but if this is going to happen to the brass hardware I am rethinking buying it... Anyone have the same issues with their brass hardware? Has anyone found a way to fix the hardware?