The Camco Big Red Portable Gas Campfire does not have an adjustment to the air mixture. The fire pit's manufacturer told me that the soot problem is not an air mixture issue but has to do with the amount of additive that propane gas companies use in their gas.
The additives that propane companies add to their gas can cause soot build up in your propane gas accessory.
These additives might differ from gas company to gas company. By changing where you purchase your propane might fix this... view full answer...
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