I just purchased and installed a brand new castille pellet stove. I've tried a few bags of pellets, different brands, and think it's under performing. I've loosened the set screw, have the pellet adjustment wide open, and yet on low, flames can die out. On high, only rarely do flames reach 4 inches. I believe that the castle from the factory is set very conservatively, and the auger is simply going to slow for longer pellets. Anyone else have this issue with a brand new appliance?