Congratulations on getting these machines. I too love DD machines for their simplicity, and they are very easy to take apart. I am also a fan of the "Tilt Panels" WP had when they came out with these, I like the black tilt panels better than the pure white ones. If I had this set, I think I would leave the agitator thats in it, five fin straight vane. I dont think I would swap it out for a DA. I'm more than positive this is the lint filter agitator too.