The problem started when the port into the icemaker became slightly clogged with a piece of ice, thus restricting the water flow, and yielding small cubes or unusual hollow cubes with thin outer surfaces.
Thats when I noticed a small leak in the solenoid valve also. The solenoid valve was the type that has a snap action port on the output side instead of the threaded fitting.
I'd suggest the solenoid valve with threaded fittings..........more reliable.