ok, so yesterday at the track i put a bag of ice wraped in a towel ontop of my blower to cool it down between runs. well, never have had this problem before, but at the end of the day i noitced that it looks like the towel "etched" the polished surface on the case of my blower. i have tried cleaning it with detial spray and what not, and its not coming off that way. any suggestions about getting these horrible looking marks out?