Ice Maker Slow Making Ice

Hi Guys,

An older (10+ year) Amana top freezer with ice maker. Model TZ18Q2W, production code P1156103WW, ice maker model #S106626640. The ice maker takes forever to make a batch of ice. What ice does come out IS the correct size and shape, which from what I read seems to mean the water flow is ok. Right now the ice in the maker is fully frozen and appears to be consistent in level from front to back.

Any suggestions?

Thanks so much!