This is Turtle.
Every once in a Blue Moon i will work on a ice maker in a Refrigerator and was thinking about the hollow ice cubes on the ice maker and what was the general cause. I had this trouble on my ice maker at my house about 3 or 4 years ago and someone here told me what it was and I fixed it and i have slept since then and it is starting to do it again , just a little. Can someone refresh my memory?
TURTLE