I have a Canon i960 that will not feed paper on its own - takes many tries manually jamming the paper in while it is trying to load a new sheet. Appears that small notch is put in paper in the middle when the feed mechanism starts to load a new sheet and that guide/pawl gets in the way of the paper going into the throat. I have tried the roller cleaning function many times and blown all paper dust from the printer. I could not determine how to take the printer apart to get to the feed rollers to possible clean them with a cleaner. Any ideas or possibly some instruction on how to dissasemble the printer to better clean the rollers?