I am big fan and supporters of Amazen Products stuff. Using it for almost a year now. But I was having some problems with last few smokes made in a cold weather. First thing first. Cold smoking salmon. Outside T is around 45F. Every step by the book. MW pellets for 45 sec then maple on a bottom cherry on top. Light it up waited 10 min burned almost two inches of the first row. It smoked good and than stopped at the end of the row. I reignited it and its smokes good for 15 min but wont go further just stops dead. I was repeating this 3 or 4 times. I cleaned AMNPS and put some hickory dust. Ignited it on both ends. It produced VERY thin smoke and I was kind OK its smoking. By my calculation AMNPS with dust ignited on both ends will smoke for around 2-3 hours. After 2.5 hours I opened MES40 to check and to my surprise it barely burned to the middle of the first row on both ends. Vent was fully open. Loader removed. Ash trey opened. On a side note. I also got AMNS and when I use it dust burns trough the walls. I put some foil on walls but all it does is dust burning in the middle of the row and than just stops. The only difference I see is a colder air. I do everything same as I did last summer and everything was fine. Another observation. I noticed that cherry dust always ignites and burns the best.