I finally got around to using the grill for the first time and decided to do Chicken thighs at 400 for about 45 minutes. Once they were done, I lowered the temperature to 250, let it sit for a few minutes, threw some food on and went inside. When I came back out, there was a bit of smoke coming from the hopper. I opened the lid to the hopper and it stopped smoking after about a minute. Was this an auger fire? I've only used it for the initial burn in, and to cook chicken thighs today. The pellets aren't warm it was just thick white smoke coming from the hopper.