My Kenmore Coldspot has sediment in the water coming out of water dispenser. Ice does not have any residue probably because ice dispenser is supplied by separate tube at the back of the refrigerator. I have installed a new filter and drain 8 gallons of water but the residue still is there. The residue it looks like ‘clear, very thin sheet of plastic’. Is there a way to get rid of this sediment? Or – Haw to change feed tube to water dispenser?