Has anyone polished the back of their SS? I have some light scratches beside the charging area that I would like to remove. I'm wondering if the words will get buffed out. It looks like the words are engraved, but I'm not sure. Also, as much as I will try to avoid the charging area, what if I rub the cloth there? Does it get scratched? I'll probably use the Cape Cod polishing cloths. Thanks!