I know this is an old post, but I stumbled across it and wanted to alert everyone that this problem could also be a misaligned dispenser drum in the ice container if they are dealing with an ice-n-water unit.
There were cases found where the drum was adjusted too tightly against the front plate, thus shaving plastic off the drum. To remedy, remove the front cover and locate the adjuster screw and adjust the spacing of the drum from the plate so it doesn't rub. The adjustment is made via the center screw/nut on the auger, where the e-clip is located.
Hope that helps someone in the future!