Kitchenaid Refrigerator Ice Maker: Water Outside / Above Ice Tray

I have a Kitchenaid model krfc604fss01 with an in-door ice maker. The ice maker makes ice, however recently the ice storage bin has been freezing solid in one area. I’ve taken apart the ice maker, and I can see water is getting on the plastic area above the actual ice tray - which leads me to believe the water is not coming as it should. However, it doesn’t appear as if the ice tray is being overfilled as there is still room at the top.

I was about to replace the ice maker unit, but I’m now thinking that this might have something to do with the water input valve assembly in the top (ceiling) of the ice maker compartment.

I haven’t yet figured out how to remove this valve and even if I did, I’m not sure how to test it.

I have tried reducing the water pressure into the refrigerator by partially restricting the input line, but that didn’t seem to have any impact. I can also confirm that the ice tray isn’t leaking as I have left it on my kitchen counter full of water and none is coming out. So, that leads me to believe that something is happening when the water is actually filling the tray that is causing it to splash or otherwise be directed outside of the tray where it drips down into the bin and freezes.

Is it possible that the input assembly would freeze up or perhaps slow drip enough to have the water land outside of the tray? Or, is there some type of pressure regulation on the input valve that would keep the stream to a low pressure so it doesn’t splash, and perhaps that has failed causing water to fill at too high of a rate?

Any thoughts on this would be appreciated.

Also, any thought on how this valve unclips from the ceiling of the ice maker compartment?

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