Ok...i got my AMNPS and did a pork butt in my 40 MES.
Now i think i understand thin "blue" smoke....But i think Trike is right ..i had to pull it 3 times to light it. I left the damper open, chip loader out a few inches and chip pan pulled out a bit and it still went out. I torched the hell out of it and let it burn for a while and it still smoldered out.
I then threw a small chip in the chip loader and boom...white caustic smoke that choked me.
Im going to try the microwave pellet drying test next. Have to say so far it still is bettter then loading the chip tray and watching the white billowing smoke .