Hello, I had installed a used summit insert in early December, at first she was a champion then about a month into regular use things degraded. Let me add I am a total newbie, I have no idea whats going, Im learning. With that said I assumed the wood to be the issue, but that wasn't it. Ive come to the conclusion that air is the issue. This unit is setup for inside are intake... I now realize that this stove is very advanced after reading through all the threads here. I took out the baffle and cleaned it with some air, I also blew out the boost air in the front but nothing came out not even the air i was blowing thru... which confused me. I started another fire but same issues, I have to leave the front door crack to keep the fire going with 1.5 year seasoned cherry...that should burn like dry tinder it nearly goes out when i shut the door tight. So today i probed the back air intake inside the unit to see if anything was plugged up, it was clear, but i did notice on the outside bottom of the stove some fine dust dropping from the intake and i watched this dust head back into the fire place, this makes me think that the stove isn't pulling air in from this area. I have a 25' chimney which is central to the house with liner running the whole way. I also do not have the part called "Quadrant shield" Part#3536.01 Ill post some picks from when I first had it installed and how it burns now