This is a 2011 model, and has always worked perfectly until now. It just accumulated a significant buildup of powdered soap residue inside the swing arms and plugged up the jet holes. I replaced the upper, middle and lower spray arms, as well as fine filter and hub nut, using parts I ordered from appliancepartspros.com. I also consulted the "how-to" videos on the appliancepartspros.com website.