Finally got around to finishing the install up of my used buck 80 insert I picked up this fall after we moved in August. I had great success with the 91 at my old house pushing 14 hour plus burn times with ease but I Left the buck 91 at the old house didn’t feel like moving that beast again even though I got it for free. I only paid 400 for the 80 it’s great condition. Cat was completely intact. Previous owner took great care of it and it showed. But I did pull the blower and cleaned all the dust out and cleaned the cat out before installing. Install took a bit longer as I had to send a few liner pieces back and reorder what I actually needed. I’m running about 20’ of the 6” oval duraliner system down my chimney since it wasn’t big enough to fit insulated round flex. System was great to install. And fairly easy as I did it myself without help. But my roof also isn’t to steep. The rigid sections extend passed the clay liner into the fireplace then went to oval flex in the smoke shelf then obviously back to round just before the stove. System drafts excellent. Sorry I didn’t take any liner pictures I still have to get back in to install the block of plate and roxul just wanted to fire it up ahead of the cold weather/storm. Yes I have a hearth extension just not in pictures yet, had to setup safety gate for toddler first . And stove does pass mantle clearances listed in manual in case you question it.