I recently came across this forge and i am trying to research some more information about it. The only marking on it are Johnson Gas Forge Lincoln NEB. and Shamps Iron and Mfg. I plan on making some railroad spike knives but need to get this thing up and running first. Does anyone know what the knobs on the side of the burner do? Fuel flow, air flow, fuel/air mixture? what type of regulator, etc. I have had it burning once for about 5 minutes. Thanks for any advice
