Hi all, my mitsu 52 inch dlp has a washed out faded picture , especially night scenes, - I replaced the lamp (mitsubishi replacement) about 5 months ago - it looked better but not quite like when I bought the set brand new. I have read posts where the mirrors could be dirty and cleaning it seems to do wonders. Question - how can i get to the mirrors? Do I have to take the screen off? or go from the backside? I'm pretty handy with things so i just need some general direction on how to start and any tips would be appreciated - thanks in advance!!