So I started a routine cheese smoke at 2pm today when it was in the low 50's. It should have taken 3 hours. At 5:30pm I was disappointed to see the cheese didn't have much color, and upon investigation, one of the two rows of smoke went out. Never had that happen before. (yes I microwave the dust beforehand). Also, the row that did burn didn't seem to burn evenly. Around 6pm I tried to light the last row and it's been difficult keeping it lit. It's now approaching 8pm and I've lit the last row in three places to finish this off. Usually I'd not want to smoke cheese this long but the cheese is pretty cold. It's 39f now. Is it harder to use an amazen in colder weather? If not I can only think that the torch was low on fuel and that was the problem.