The small "nubs" on the assembly had worn off.

After several years of use and cleaning the small "nubs" that held the locking peice on the assembly under the jet arm had worn off. This allowed the whole thing to spin and the dishes weren't getting clean. Finding the part on the site was easy, it arrived amazingly fast and all is up and working great. I have used Parts Select 2 or 3 times in the past and have always had the same great results. Saved me a bunch in repair bills. Thanks