As for using sawdust in AMNPS, here's a little "Amazing" History lesson:
"In The Beginning" (About 5 years ago):
Todd Johnson invented the "AMNS", which had single vertical walls, and were designed to burn Sawdust. They were the Greatest thing since sliced bread, except for one weakness. Once your smoker got over 200*---Usually 220* & above, the burning dust had a tendency to jump from one row of the maze to the next row, and burn up real fast until it was empty.
So "Amazing" Genius Todd goes back to the drawing board & through an awful lot of testing & adjusting, and changing, and experimenting, he ends up with what we now have & call the AMNPS.
I helped with a lot of the testing & reporting of results, and I have a number of toys I got through that procedure.
They say you can burn sawdust in the AMNPS, and I don't know if the smoker temp affects the AMNPS when burning Dust, however since I have numerous Amazing Toys,
I use my AMNS with sawdust from Todd for all smokes that the Smoking Temp remains below 200*.
And I use my AMNPS with pellets I get from Todd for all my smokes that the smoking temp gets above 200*.
These Amazing things have sure made my Smoking Life a lot easier!!!