Product review (4 stars): great product! but gotta keep it clean.
Good investment!!!  But gotta keep it clean.  There is a small screw in the water outlet assembly that easily gets clogged with debris, lint, bugs, whatever.  Easy to fix.  I was using a clean rag to wipe down the water resivore.  It must have a lot of lint or something.  The tray stopped filling correctly.  8 screws and a pair of tweezers, pulled the gunk from the water outlet.  Now it's back to normal.  FYI. Unplug it, put a towel in the sink and put the icemaker in upside down.  You'll see 4 screws to remove the rear half of the cover.  Pull that and you'll see the rubber water line.  Gently remove the water line from the outflow, use a flashlight and tweezers to clean the outlet.