I was having problems with my Peak 1 Coleman single burner liquid fuel stove, which has been very reliable for a few years. It would light with a typical yellowish flame, but it would not switch over to a blue flame. I took off the upper assembly, looked into the small cavern inside, and it was full of stinkbugs! The stinkbugs were apparently attracted to the underside of the burner assembly, and they effectively clogged it up. A good cleaning took care of the problem, and the Coleman liquid fuel stove is working like new. Guess I'll have to deal with the lanterns too, but that will be a winter project.