Cedarjunki
Minister of Fire
Just want to comment on factory settings(6-4-1) and closing the bottom holes beneath the burn pot. If you give your stove more air say five or six (rule of thumb is to keep it even with your pellet drop which you said was six) you will not have a need to plug the airflow. Just sayin
The 25 pdv and pdvc is a double auger feed. Those lower numbers have absolutely no affect past heat range #2 on these stoves. I am guessing you have a single auger drop feed stove? My understanding those are adjustable through out the heat ranges.