I remember going with my mother to buy our first WP DD in october of 1988. It was a super capacity 6 cycle one speed machine. That machine had the surgilator where the barrel of the agi lifted off to clean the little filter at the bottom. The 5 vanes on the skirt were much thinner and more flexible than on the Triple Action Agitaotor i have now. It worked well and actually had very good turnover with no wear and tear that i can remember. I guess what i am saying is you don't really need a DAA when you are basically dealing with the washing machine version of an Osterizer LOL.