I have an older Breckwell P2000 insert. The flame and heat appear to be fine but the burnpot is filling up with ash after 12-15 hrs to the point that unburned pellets are falling out and collecting in front of the burnpot. My guess is that there isn't enough air flow to eject the ash from the burnpot, I've adjusted the damper and even open all the way doesn't seem to be enough. A few notes: I have been testing different pellets this year, maybe burned 15 bags total since the last full cleaning. This issue is happeneing with all different kinds of pellets, I have mostly been burning Barefoots and Spruce Pointes. I also have taken a chisel to the burn pot and cleared up any plugged holes. I'm wondering if an OAK would solve the problem? I'm not sure what the best way to install an OAK in a chimney insert? I didn't have this issue last year. Almost every issue I've encountered with this stove has been solved by cleaning but I don't think that's the case this time. Once again: after cleaning, the stove seems to run great with outstanding heat and an active white-ish flame. Over time the ash starts to collect in the bottom of the burnpot and eventually the flame becomes less active and the burnpot fills all the way up. Any ideas? Having to shut down every day to vaccuum out the burnpot kinda sucks.