I have a spot on my screen that is Gorilla glass. I must of had some motor oil on my hand or something. Anyway I tried by wetting a cloth then tried alcohol and the smudge wont come off and is driving me nuts! lol. When I read something it is there and have to scroll up or down to see the print. I'm thinking about goo gone but if the alcohol didn't phase it IDK. Any ideas will be appreciated!!