Water overflowed ice maker turnning ice bucket into solid mass of ice

My ice maker has been shedding its non-stick coating for over a year. Within the last month of so, it started pouring water into the ice bucket below, turning it into a solid mass of ice. So I purchased a new ice maker assembly. I encountered two problems not mentioned in the 21 or so do-it-yourselfer repair stories that precede this one. First problem: one of the three screws that hold the ice maker to the refrigerator wall is hidden behind the large (black) end of the ice maker and is difficult to access. Before trying to replace the ice maker, make sure you have the physical dexterity to remove that screw. Second problem: it is not apparent how to remove the wire harness that plugs into the ice maker assembly. BEFORE you can remove the wire harness, you MUST remove the large white cap that covers the black end of the ice maker assembly and then push in a retaining tab to release the wire harness. If you don't do this, the wire harness will not release. Other than those two problems, it was relatively easy to remove three screws, unplug the wire harness, transfer three small, metal parts from the old ice maker to the new, plug in the new wire harness, mount the ice maker assembly so that the water tube is in the proper position, and then re-install the three screws. The ice maker works fine now. (P.S. I was told by an expert that the real problem might be a malfunctioning fill valve. I would have replaced the fill valve if replacing the ice maker assembly had not fixed the problem.)