I don't know if it's something I'm doing wrong, or attaching it wrong (but there seems to be only one way to attach it so ...) but there's no power with this appliance. No matter what speed I use on the blender, the processor only goes one speed - slow. It made mush of some cheese I tried to shred, and when I tried to slice an apple, the slice thickness was all over the place. I was so disappointed I almost took it back, and probably should have. I just expected better from Kitchenaid, ya know?