I have been trying for months to tune in this pellet stove via exhaust voltage and back damper. Comfortbilt is almost unreachable to get a human on the phone at this point. I have dialed the exhaust voltage down to 90 on level 3 and still have a good solid flame. Is the goal to just go as low as possible without lazy flame? Cause the voltages I have gotten from Comfortbilt and way higher than this. Thanks.