I blew it this weekend. I was making ribs. Everything was going well. I checked for doneness about 4 hours into it and saw they needed more time, but were getting close. Went away for half hour and came back to recheck. I had made a rookie mistake. I had always been so careful and I guess since things were going so well, I got careless. I didn't check the daisy wheel when I put the lid back down and it was open full. You can imagine the condition ribs (that were almost done anyway) were after receiving 600 degree temps for prob 15 mins. If anyone wants a recipe for CRUNCHY ribs - I've got one for you!