I tried using a hair dryer to defrost the water line and it didn't help, but I forgot to put the front cover back on, so I'll put that back in and see if it makes any difference. I'll also try cleaning out the compressor area, too.
The ejector seems to be somewhat loose - you can move it around between positions - is this normal? I tried filling the mold with a bit of water, but it didn't eject that batch of ice. Starting to look like I'll just need to replace the ice maker, huh? I've told my wife I can replace it myself for ~$130, but she thinks I need to call a repairman to make sure it isn't something else (like the water inlet valve, etc). Is there a way I can rule out the inlet valve before dropping $130 on the ice maker?