I just got a chance to check out the "boost"/"b" control. It opens an intake underneath the stove in the very back of the stove as seen in the first picture. http://s106.photobucket.com/albums/...163-0000000C6F3C3D02.jpg&evt=user_media_share Picture two shows it then travels up a passage on the outside of the stove, welded to it, between the stove and the heat shield. Then at approx secondary burn tube height it goes into an opening in the back of the stove into a channel full of holes that runs parrallel to the secondary burn tubes. http://s106.photobucket.com/albums/...163-0000000C7B7821AE.jpg&evt=user_media_share Picture 3 shows right below the back tube a black piece running across full of holes. I also noticed the back/6th secondary burner didn't seem to have any holes in it? http://s106.photobucket.com/albums/...163-0000000C89A7C795.jpg&evt=user_media_share That being said, what would be the best function for the "boost" control. Seems like it would provide extra air the secondaries. It says to always close it and adjust the primary and then to readjust the boost after? I'm just curious, does anyone else have a ponderosa? It seems like I'm the first one, also the prices have jumped up on them and they just now showed up at home depot.