It's an easy fix! You have one bolt that holds the burner in, remove burner which I clean with a wire brush and run a rag in the burner intake hole. You now have access to the orifice. I use a 3/8 drive socket and remove the orifice, be care not to lose it. I then clean the orifice and the area inside the regulator with a Q-tip or two which gets an oil like residue from the LP which is what plugs up the hole in the orifice restricting gas flow. Reassemble and good to go. Usually once a year!