Ok, it is time to do liner number two. The basement run is going to be a thirty foot liner down a 7X11 ID clay flue tile chimney. The thimble is an eight inch clay jobbie 20 inches long through the concrete block basement wall. The clean-out door is in the side of the chimney below the target flue and is 8X8. That postage stamp size clean-out door is four feet below the junction of the thimble and the flue tiles. While basically straight down, there is a slight bow to the interior of the chimney. No, it ain't falling down. Wonder mason built it that way. Pretty much a nightmare in the making. All suggestions and tips accepted and none argued with. I am sorely tempted to pretend I am in Europe and do a five inch liner into that Jotul in the basement.