I replaced the U tube burner with this one. I increased the size of the orifice from a number 45 drill bit to a 39. I could have stopped at 41 since I didn't see a change. The venturi is only opened 1/3. A single burner at low is 140 f. On high it is 400f or more. Still waiting for the smoker. Also changed out the heat plates to ceramic bricks.
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