i've had my yamaha DV-S5350 for a year and a half now. its skipping in random places on perfectly clean dvds. i can go back through the scene and it will play back fine. a month ago this would only happen once or twice during a movie, but recently its been happening very frequently. for the better part of the year i had it, it was just sitting on top of my vcr (i just got a cabinet for my gear about 5 or 6 months ago). i tried the disc cleaner w/ the little bristles on it, but that only helps for about 2 movies, then the problem starts back up again. so, i was just wondering if there was any special way to clean the player, because i think it is just dirty from being exposed in a dusty environment. do i just open it up and clean anything that looks dirty, or are there things that i should avoid touching ?