Cooktop is about one year old and the controller to one burner became stuck in the closed position so that the burner could not be used. Took over one year to get it fixed. Now a few months a controller got stuck in the open position and could not be shut off. All the gas to the cooktop had to be shut off as this is a major safety issue. The repair department cannot fix it for 1.5 weeks so the cook top cannot be used safely. I called jennair and spoke to a rude and obviously imcompetent person in their specialist department. He did not care and certainly could not provide specialty service. Do not buy jenn air appliances. Poorly made and even poorer is their service department. Obviously jenn air does not stand behind their so called high end products.