Bad Experience With KitchenAid Food Processor

Sorry Diana. the old 14 cup goes up to 8 mm and the newish 14 cup Elite 2.0 has a slicer that adjusts up to 10 mm thick. But the smaller ones only go up to 6 mm as you found out. I have both an old 7 cup and an old 14 cup. (Cuisinart) I have a 8 mm slicing disc for my 30 year old model 14 cup.
And they upgraded the 14 cup Elite 2.0 to a 10 mm. adjustable slicer.