I started noticing that my Quadrafire was not getting a good burn on the secondarys,and I was also getting creasote running down the outside of my chimney, not excessive but haven't had that occur in the past, just some build up on the cap. I removed the cap and cleaned the chimney,was about 1/2 of a full seasons worth of powdery creasote.maybe 14-16 ounce cup worth. and removed and cleaned the secondaty burn tubes and the top baffle and ceramic blanket. I noticed a little play-gap in the single wall telescoping chimney at the stove collar adapter on top of the stove, wasn't sure if it was to compensate for expansion or not but I had'nt noticed it before,so one thing at a time 2 more days of single digit temps and still had almost no secondary burn. Usuall this stove when hot will give secondary burns that look like a sideways tornado with good dry pecan. Still no luck. Today I removed the screw from the telescoping chimney pipe and turned it a couple of inches to cover the hole on the inner pipe and seated the pipe tight aganist the collar and reset the screw in the pipe. Now to see what happens if we get another cold snap. The only other air I found was at a rivet in the collar. Just barley could see any light by useing a flashlight around the collar. This collar is an adapter collar of single wall to the stove collar. Any suggestions? or am I giong the right way? The stove is about 14 years old with about 20 feet of chimney. other than the single wall to the cealing adaptor,the rest is double wall insulated to the cap. We went from single digit temps at night to the upper 50's today.