A couple ways to prevent burn out is to keep the tip of the torch just inside the burn chamber when initially lighting. There is no need to put the burning torch right up against the burn basket and pellets. Doing this gets the burn basket steel bright red and compromises the durability of the metal.
In addition, aim the torch flame down under the pellets in the basket not at the pellets. You aim under to primarily to heat up the pipe and initiate the draft while also lighting only the very bottom pellets in the basket.
Besides this, make sure the pellets are not building up on the secondary burn plate and smoldering the burn basket in a pile of pellets.
Any other tips, please let me know!