Well, I've had my MT3 for just over 2 months and I have my first dust spots. They present as an ill defined light area, about the size of the palm of my hand on an 8' display screen. Only really visible in the lower black bar when viewing widescreen. Has anyone taken the lid of the MT3 to clean it? I read in a thread on this site that ninc0 had. Anyone offer any guidance and advice on doing this, such as how many screws do I need to remove, what will I find inside when I remove it, and what should I be 'blowing'?