I recently bought a KitchenAid 27" double oven. After using it for a week or so, I noticed that on heating, the heat shield, which supports the element, buckled and touched the element, which then blackened. When I reported the problem to them, they replaced the shield twice, the element and shield once, and then informed me that "that is the way it is supposed to be". There is clearly a manufacturing defect in the heat shield and KitcheAid would not take responsibility for it. I will NOT buy another KitchenAid product because of their lack of responsiblity for their products. read full review »