Received as a gift and I use it successfully fairly often to spiral potatoes, zucchini, & beets. The slicer makes prepping apples for pie a breeze although I would like the apple slices to be a bit thicker. I have KSM1APC which came with 4 blades. I see the newer model has 6 blades. KitchenAid, is the additional slicing blade thicker than the 2 I have already? If so, how do I get one?