EIKI LC-XG210

Question

When there is only white background projected I see faint pink swirls acrost the bottom of the screen. I think that there is probably some dust on one of the internal lenses or displays. Is this possible or is something else wrong? If dust is the problem, how difficult would it be for me to take the projector apart and clean it? I'm pretty handy at that kind of stuff. My concern is that there are adjustments that need to be made inorder to line up the displays that would take special equipment.
Another problem I have had occasionally is a that a faint circle of discoloration appears at the center of the projected image. The size is approxamately 1/3 of the picture. It looks like it might only be caused by the red LCD panel. Is this a serious problem? Wht causes it and how do I fix it? Thanks!