We purchased a KitchenAid KPMC140 microvave oven in 2003 and are about to replace the door springs for the third time. And when they fail, they don't just fail in place but rather come flying out of the unit. This could be a real hazard. Clearly, the springs were not specified to handle the weight of the door for normal use. We have also replaced the controller and the display panel in this unit. We have never paid so much for such a low quality appliance. And don't even get me started on A & E service. In a word: a farce.