Ice Maker auger blade broken

The ice machine auger blade broke a chunk off. I decided to try to replace it myself. I bought the new auger blade and then sat there and stared at it and the ice machine for a few, trying to figure out how to change out the part. Turns out it was a qute lengthy process. The auger is threaded on one end and the ice chopping blades are on it. So I had to take each blade off the old one and put it on the new one. The blades have to be positioned just right on the shaft so it's best to just draw a line down over all the blades so as to put them on the new auger successfully. The problem I had was the end cap that screwed on the end of the shaft. It was the part I ordered here. It is made of plastic with plastic threads and at first I couldn't figure out to get it off. Turns out the threads are opposite normal. By the time I figured that out, I had just about destroyed the cap using pliers to try to unscrew it. There is a washer and half moon clip that fastens on this end nut so if you mess the nut up, chances are you won't be able to get the half moon clip to go back on. I finally did it right and now how the ice maker working right again. A hard part for me was figuring out how to set the spring shaft that works a lever to either give cubed ice or crushed. I had to keep fiddle with it before I finally got that right. At first I was only getting crushed ice even with the cubed setting and then only getting cubed ice with the crushed ice setting. After some fiddling, I got both to work but to this day can't figure out what changes from the crushed setting to the cubed setting.