I have a Panasonic LCD Television Projector PT-AX100U, that we just love. It has developed some kind of dark blotchy spots on the left side of the screen, mostly visible in the red channel. Since we live in a humid area, I believe it could be mold building up on the "back" of the projection lens. The rear lens element is not accessible as far as I can tell, and the lens will not unscrew. It is way past warranty, so I'd like to try it myself. Is there any way I can remove the lens to clean it? Or, at least access it from the inside? Any help or advise is appreciated. Thanks. .