Instruct: Classify Amazon reviews into positive or negative sentiment
Query: warped on arrival

When this arrived, it was horribly warped and unable to lay flat. One of my primary uses for this was supposed to be pancakes, but I can't make pancakes on a curved surface. I will be returning this item. (Unfortunately, Amazon's only other 28" griddle is more than twice the price, so I'll probably end up with a smaller one.)