So I bit the big one and orderd a SS Flex liner today from the Chimney Depot. We went with the 5.5 inch liner kit and .25 inch insulation kit. I wanted to try to use the .50 inch insulation kit but due to the I.D. of my clay liner the salesman did not think I would be able to get in down the chimney. I sure hope this makes the stove work better or the wife might kill me Its 73 deg. and sunny so I won't need it for a while.