Any suggestion where the fuel adjustment rod should be ? Saw 2 different you tubes on it one suggested half closed another suggested 80% closed . Installer said leave it all the way open Burning Curran pellets. Flame at open up max is 14-16 inches tall no soot 1/2 way open flame at 12 to 14 no soot 80% to 85% flame tops out at 9 to 12 but as low as 2 to 4 inches above burn pot no soot Any ideas would be great New Stove new to pellets what should flames vary from?