I did not realize it, but this stove is 8 years old and still has the original catalytic converter in it. I have been cleaning it once a year, burn about 2 cords/yr on average. 6"Stainless chimney in straight vertical position, I have always cleaned the chimney from the bottom. I had taken apart the refractory chamber cover and vacuumed it as I usually do, put some new gaskets on the metal cover plate, and put it back together. Just before spring I noticed it was a little more smoky- I checked with a pair of binoculars and I have noticed that my chimney cap is partially clogged, but there is still over 70% openings on it. Do you clean the chimney cap or replace it? Also, I noticed that I saw flames where you see the red arrow, I don't know if fire should show up in this area if the cat is engaged. I need to replace the gaskets where the blue arrows are-what is easiest way to do this? Figure I should get a new cat due to age- how is Condor Cat? Lastly, how would you fix the area on the griddle where the handle broke off ( I have the other piece). I would like to get a few more years out of this stove, we may be making the house a little bigger and change stoves at that time but I need a couple of years out of this one. <hr>