That is what I thought. But after one year with the two EPA stoves I went ahead and lined the chimneys and difference was day and night. Not only great draft and better burns but a heck of a lot easier to clean.I still don't understand why everyone feels the need to line a perfectly good masonry chimney? If you burn dry wood at a reasonably hot temperature you won't have any more creosote problems than you will with a liner.
Linerz in chimleys is gud.