I recently acquired an AMNPS and I'm having trouble getting it to stay lit. So far I've tried the blowtorch and hair dryer trick to really get a nice bright red coal going, then I set it on my regular grill (the grill was not on) just to try and see if I am getting it lit properly. It burned about three inches and died, so it appears to burn for a little bit but I just can't keep it going all the way.
Here is some pertinent info:
I live in Cedar City, UT. 6000 ft above sea level, very low humidity, and we've had some nice hot days lately.
My attempts to light and test the AMNPS so far have been done in virtually 0 wind and with plenty of ventilation (even just sitting out in the open on top of the grill)
I'm using the pitmaster's choice pellets that came with the AMNPS, I have not yet tried other brands of pellets.
I've read that elevation can affect how the AMNPS works, but have not found anything so far about specific ways to help at high elevations. I will probably end up doing the mailbox mod on my MES40 as soon as I can figure out how to keep the AMNPS lit.
Any suggestions would be greatly welcome.