Maytag Refrigerator

I’m out of ideas to fix my Maytage Refrigerator. It has been a problem since the day we purchased it. Maytage at one point even replaced it with another and we still have problems. I’m the process of replacing the ice fountain float for the second time but a new problem jas come up that I’m at a lose to figure out. Ice forms under the circular moving rod for ice dispension. I also get ice in the tunnel where the ice is moved through. It either freezes up or crunches all of the ice that comes through it. Often no ice will come done the shoot or it will all come down at once. It seems lke there is water getting in there and freezing but I cannot see any. This one has me! Any ideas? Thanks