I have a hearthstone shelburne with 24’ double wall pipe no bends. It’s 45 out and my air is pushed all the way in and I’m getting good rolling flames on half a load of dry cherry. Also had to clean the cat after one month of burning due to ash clogging it up. I only want to hear from the experts lol. Will a damper help and if so exactly what can I expect it to help with.