The adjuster kit had all of the parts necessary to replace the original (cheap) parts.
The instructions that came with the adjuster kit were not all that helpful. The copy was somewhat blurry, especially the pictures, and seemed to skip a few step descriptions.
The video on the website was very helpful. The only (minor) issue was that the video showed replacing similar parts. The original parts in the Kitchenaid dishwasher were all plastic and removing them was slightly different from the video instructions. But that was a very minor issue.