that it is intuitively backwards. At least it is for me. When you turn it on, the very first position is high. Instead of turning the valve on and increasing the gas flow as you rotate the knob you turn it on high and lower the flow until you reach the stop. The stop is the lowest flow position. I first turned the valve on and rotated it to the stop at the lowest flow level and tried to light the burner. There was to much breeze and the thing wouldn't light. Once I figured out the regulator and turned the brain around I was fine. If it's an option I would hard plum the thing to your onboard propane tank which does away with the regulator. End of regulator issue.