Hey everyone. New here and just posted in the introduction thread but I have a question. My wife likes to use the thin plastic table cloths when we have a cook out in the back yard. I was using my 22.5 copper OTS and the wind blew the table cloth up and it stuck to the side of the kettle bowl. I'm trying to find a way, if one, to clean it of without damaging the finish. Unfortunately the kettle has been used several times over since this incident. Does anyone know of any possible ways of getting this off. The kettle still cooks great of course, it's just an aesthetic issue for me.