Last night when I was putting my speedy in her dust bag, I noticed a little white scuff mark on the bottom. I usually keep my bag on my lap, so I don't know where it came from. I might have bumped into something while I was carrying it. Is there any way that I can get the scuff off of there?? It is very small, and not very noticeable, it wouldn't be the end of the world if it never came out, but now I am paranoid it will happen again!!