The guys are right, airflow is very important
What smoker you using it in?
Where you placing it?
TJ
Everything already stated is very important. I will add that make sure you are using pellets from a new bag or some that have been stored inside. I got my AMNPS a year ago and found out that taking pellets out of my Mak hopper would not stay lit. I keep my smoker under cover but I figure the pellets soaked up some of the moisture in the air here in the NW.
I crack my lid about 1/4" with aluminum foil and place it on the main rack.
I cold smoked some cheese this morning and it took about 3+ minutes with my small butane torch to get the pellets going the way I like.