I have three short turbs that sit horizontally at the very top of the boiler. They run from the small chamber where the bypass flap is to back where my fan is. I also have two long curved turbs that fit in the two tubes that go from the bypass chamber down to the back of the combustion tunnel. For my cold start I pulled the three short turbs out completely until I had burned through a few loads of pine that I had. That dried out my ceramic and I got most of the moisture out of my boiler and chimney that way. After that, I just threw the turbs back in and have been burning as per the normal routine when I needed it (a few nights a week). I did change things up some this season, and I am using 1/4 of a super cedar as a fire starter instead of the paper/cardboard that I was using last year. That was giving me a lot of fly ash that I didnt really like, and the super cedars work really well. I havent cleaned my tubes yet, but I probably will this weekend just to be sure everything is going well. I now have a good bed of ash on the ceramic in the main chamber, and Ill leave that there until it really builds up in the corners.