I used it as an open grill, to cook boneless chicken thighs, shrimp, and veggies. The side of the grill marked "top" cooked the food noticeably faster than the side marked "bottom". Yes, I was cooking the same food on each side. I called Cuisinart and they said no one had reported this problem to them. They suggested an exchange, but I've had poor performance from several other electric appliances, so I'm guessing that this one is no better and I probably should just get a refund. Anyone have any advice? Thanks!