I recently bought the Griffin Survivor case for my iPad mini. I am happy with it. However I am having a problem with the Survivor case screen. When I put the screen onto the top of my ipad mini screen it has formed an oil slick effect. The screen seems to have a multi coloured oil slick effect which I find annoying. It is only noticable on black/dark backgrounds. Secondly there seems to be a couple of dust particles caught between the Survivor case screen and the iPad mini screen. I have tried taking the case apart to remove the particles but more particles seem to get caught. I am really worried about this as it could mark or scratch my iPad mini screen. Please advise.