Trikebubble
Adventurer
^ Not an expert by any means but some simple things to check/do. 1) The auxiliary burner on my 60's model 413F will not burn nearly as hot as the main unit - maybe 2/3rds ???, I think this is about normal 2) Check for spider/insect nests in the aux burner tube 3) Remove and clean aux burner plates (note the sequence as they must be reinstalled in the same top to bottom order). Ask the folks here for help http://www.colemancollectorsforum.com/
Great find by the way.
Thanks. I took it apart, cleaned it up, put it back together and the aux side burns way better now.