Hi all! Got this cute Austin bag in bone and it looks pretty dang amazing for the most part, haven't even started rehab. But it's got a bad case of verdigris under the zipper and in a couple other places where the brass is in contact with the leather. I've read on here that it's hard to remove. I was thinking of trying to file it off, gently of course?? Good or bad idea? Any suggestions would be greatly appreciated!