wood pellet burner for OONi Fyra pizza oven

wood pellet burner for adding on your OONi pizza oven. Traditionally wood pellet burner is small, and fresh air draft is strong. Then combustion is complete and clean. OONi pellet burner is against this well accepted and proven design. Pellet piles up at burner, pellet feed is not under control. Natural draft is weak. So OONi gives heavy black smoke. Amazon reviews say "SOOTY". You can add this burner on your pizza oven.