Yesterday, following assembling the grill and following the directions to preheat on HIGH for 15-20 minutes, the temperature gauge did not rise above 375 degrees. After waiting ten more minutes did not make a difference in the temperature. I then opened the lid to place the food on the grill, and after doing so, I saw the temperature drop to 300 degrees. It rose no higher than 375, and it took 45 minutes to grill two ears of corn, two burgers, and asparagus because of the low temperature.