I'm doing something wrong obviously and am looking for some input. Decided to do a brisket today, so I loaded up the AMNPS making sure to not fill it too high, about half way full. Pulled the chip loader out about 1" and the chip tray about half way out, opened the exhaust on top all the way. I lit the AMNPS, let it burn for 10-15 mins, blew it out, put it in with the hot side on the left side of the smoker. I checked about 20 mins later, it went out. Pulled it out of the smoker, pulled the chip loader out another 1", lit both sides, put back in. Everything was good for about an hour, I was checking every 15 mins or so (paranoia) to make sure it was still lit. I wasn't opening the door, I was looking at the exhaust. I went out to check on the smoker the last time and clouds of white smoker were billowing out of the exhaust. I opened the door and the AMNPS was on fire. 100% of the pellets were on fire, all three rows. Reached in with my bare hand and tried to pull it out... after I remembered fire burns you, went and got a glove and pulled it out and had to soak it with the hose to extinguish the fire. I know it's not the AMNPS, it's me. I've used it before and ran TBS for 10+ hours on a Boston Butt and set it up the exact same way. I just don't know where I went wrong. Any ideas? If I didn't give enough info, let me know... Also, on a side note, is my brisket that's in the smoker right now ruined? When I opened the door, the smoke burned my eyes pretty bad, how is that going to affect the meat? Should I just call it a wash now and get some chicken ready or something? Thanks in advance!!