Adjust ice cube size/water fill on Samsung RF4287HARS

[JohnEM]

My 3 year old Samsung RF4287HARS has been working flawlessly until recently, when the ice maker began producing small ice cubes.  I've checked all the logical solutions . . . water pressure is fine, water line is good, replaced the filter, reset the ice maker.  None seem to make an impact.  My next step is to adjust the water fill level to the ice tray but I can't find the right button combination on the display panel.  I've spent hours searching for this and no luck.  I found some instructions in another post for a different Samsung model but it does not work on mine.  Any guidance?  Very appreciative of any help.

[Samurai Appliance Repair Man]

The filter case assembly has become partially clogged or warped. Common problem. Just replace it Part number: AP5780463