we have a kenmore side by side with ice and water dispenser in the door. its about 6 years old. the ice maker will not continuously make ice. some times it will be fine for 3-4 days and then it just stops dumping the tray. the water is getting to the tray, and it will freeze fine, but it wont automatically dump. i can lift the shut off arm and put it back down and sometime that fixes it and sometimes i have to leave the arm up a while and then it will work. what do you think?