I was playing my GP32 one day and it started to rain. A few drops got onto the screen and I rubbed them off with my shirt and went inside. The next time I saw my GP32, it had streaks on the screen!! I don't believe the streaks are scratches because it feels realy smooth, so I have concluded that some of the rain ( damn that sky!) some how got on the inside of the screen. How do I take off the screen so I can clean it?