Are you using a water pressure regulator?
Some fun facts..
Washing machines (Cloths washers) fill to a line, a device senses the depth of the water in the tub and shuts off so as to not overflow.
But the ice maker fills to a timer.. The valve opens for a specified period of time. So if the pressure is higher (one park I visit it hits 120 psi) the ice tray overfills.... Lower pressure (Say 34) it under fills
There is an adjustment.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times