First I want to congratulate this Forum and his moderators, is amazing what you can learn here. Now to my question, I have a pioneer 532hd5 and love it. 2 days ago I did the removal of the screen to blow the dust from the lenses and clean with microfiber cloth and I notice ( I have never opened before ) that the red gun have what it seems to be a fabric strip across the inside of it, not in the top, inside, you can see it from the top but not touch it or remove it, looks like a piece of fabric of 1/4 x 4-5 inches and it goes from top to botom tru the center of the lens, the other 2 guns have nothing. Did you guys ever heard anything like it before? is this some sort of factory adjustment to compensate for something? Or someone mess in the assembly line? Any help will be apreciated!