We have a 1995 Kenmore Model 106 series (Model 106.9550780) side by side fridge with icemaker and water dispenser. I can't find a water filter on this fridge -none in back and none under the front kick plate grill. My spouse say the water has a slight "off" taste. Is there a replaceable filter on this fridge? How long are the plastic lines good? Thanks for any insights you can give us.