Hello, we have a 13 year old side by side Frigidaire that is leaking water at the freezer door. We turned off the water source to the freezer and it is still leaking at the door. It looks as if the water is dripping from a crack in the white gasket around the freezer door. How and Why? Could there be something else wrong? Looking for suggestions before a service tech comes to the house. Thank you, Karen Dupee :)