I have fixed my S20DRBB32A/G (8586 158 15000) so many times over the last 16 years but I am lost how to diagnose my latest leak. When I turn off the ice maker on the front panel, the ice maker fills for a few seconds and then goes off. About 30 seconds later it happens again and keeps going until the freezer ices up and leaks. When the ice maker is turned on it is fine, no leaks. Any ideas of what to change?