I have had my VC Intrepid II for 14 seasons and the first 8 or so it was just occasional weekend and winter vacation burning. The last few years, however, it has been much more. I am on my third CAT unit, (the first one I switched out too soon and still have it as a spare), I replaced the refractory last year, but now I need to replace the secondary probe assembly. When I replaced the refractory unit I also replaced all of the gaskets on the parts I had to remove to get to the unit refractory. I am wondering how you decide when to switch stoves because it seems like some people here have been through several stoves.