1st Post-so stats 1st. I have a Grizzly FP1-2 LEX/90. The builder installed it in 1995. Firebox is about 18"D x 21" W. It has a cat. Derco, maker of this Grizzly, is out of business. I never recieved the manual for this stove and cannot find one (anybody have one they can copy for me??). I burn about 2 cords a year (Dec-March). I know no one with a stove- so I have self taught myself. Not the best situation, but at least I have not burned down the house . The stove heats a 1500 sq ft basement and some of the floor above it (I am starting to work on improving the circulation between floors). My last chimney cleaner had a fit when he saw my stove. The stove pipe has a 8" to 6" reducer to meet up with the 6" triple lined stainless steel flue. He said it is a hazard and does not meet current building code. Of course he offered to install a new stove for $3,700.00. IIRC, the builder mentioned the reducer and said because the chimney was so tall (37') that the draft was more than sufficient and that the building inspector passed it. I have never had any problems getting a draft. But, the sticker on the back of the stove says to use an 8" stovepipe/flue. So who is right- the sweep or the builder? This same chimney cleaner reinstalled the stovepipe with a slight gap between the stovetop and the reducer. Look at the picture, just left of center front on the pipe. I think this could lead to a runaway chimney fire. Am I right to be concerned? Also, how long does a cat last? And if my cat is working properly, what should the thermometer on the single wall pipe read for a good burn? (I usually have it reading 250-300 degrees) I have to admit, I really like this stove. I can load it up, get a good burn going, damp it down, and still have enough coals to get a fire going 9 hrs later. But I wonder if I am burning too cool. BTW, The Grizzly can heat the 1500 sq ft basement to over 80 degrees regardless of the outside temp. I'm really glad I found this site. I have been reading it for days now. It's going to take a while to absorb it all. Thanks- Mike S.