Help Please. I have a National Bread Machine that I purchased in July of 1990and it is the better of the two bread machines I own. The other is the Panasonic SD-YD250. I am trying to locate the mixing blades that came with my National Bread Machine. ( Model # SD-8BT6N ) One blade is a ridged one piece blade and the other is a two piece design that swivels back and forth during the kneading cylce. I need to find where I can purchase the swivel type kneading blade so I can use it in my Panasonic Bread Maker, they are interchangable. The Panasonic came with only the one piece blade and I feel that the reason the National makes a better loaf of bread is because of the two piece design of the kneading blade. I live in the San Francisco Bay Area of California and would appreciate any help anyone can give me. I ordered the drive shaft assembly about four years ago, for the National from an appliance parts supply company in the Concord / Walnut Creek area of California and they had the part but I have misplaced the name of the company. Can anyone please help? Thank You. Freelan:???: