I have had my Panny 47in for about a year now, and since moving a month ago I notice some streaks on my screen. I tried wiping down the screen with a soft cloth, even one time a moist cloth, but the streaks remain. It almost looks like a squirt gun was taken to my screen one night by the cat as I slept. I cant seem to get them out. How should I go about cleaning the screen? WHat kind of pad or cloth and what chemicals if any? Remember, there is no anti glare shield on this model.