I have a Hitachi 57F500 and I have removed the screen protector which did get rid of alot of glare. But I still have a situation where the center 2/3's of the screen is brighter then the top and bottom. This bright spots moves up and down as you more your viewing angle up and down. Is their anyway to fix this, or lessen it at least? I remember reading something about linning the inside of the TV with some sort of liner to stop reflections, what would that do.