I have a Mitsubishi MB62525 62 inch rear projector screen TV that's about a year old. I've had some problems cleaning the screen. I've tried mild soap and water like the manual suggest and special liquid and cloth Best Buy sold me, but nothing seems to be working.

Looking really close at the smudges the other day when I had am image of a bright sky on the screen, I noticed that the smudges appear to be on the inside of the screen. Is this possible? Could be something on the lens or the mirrors?

As time goes on it's more noticeable and more annoying.