Just wondering............. For some reason projector lenses seem to act like a magnet, not sure if it's a static thing, or a heat thing, but dust that's floating by seems attracted to the front of a projector lens. After only a short time, looking at the lens when running (from side on) you see bits of fluff ect on the lens surface. Now I know this won't have any major effect unless it got really bad, but was wondering, do any of you guys evey clean the front of your projection lens ? If so, what do you use ? I know my father years ago used to have a very VERY soft brush with a rubber puffer behind it, which he used to clean the lens on his super 8 projector with... Good idea, bad idea, anyone ?