I am second guessing my air control setting. After the wood ignites i will gradually turn the air control down to almost full closed, but never all the way. If i turn it all the way down, the logs get real red... not many flames and some secondaries on the top, but hardly any visible flames once 45-60 minutes have elapsed. Is this ok? I really do not want to burn too low and cause chimney issues, but would like to get a little more time out of the burn. It seems that with the air control open even 5% or so... i m still burning splits at a faster rate than i would have expected. The stove face of the insert is cruises around 550 once dialed back. The wood i am burning so far is 2 yr seasoned boxwood maple and some plum that is seasoned for 1 year. What do all you other summit owners do?