As of Jan 1st, I have gone through about 1 1/4 tons of Vermont softwood pellets. Stove runs great, on about 12-16 hours a day with great heat. Each weekend I do the equivalent of the monthly Enviro M55 cleaning. I also just pulled the stove out and cleaned out the exhaust clean out and all around the combustion blower. My new style convection blower seemed fine. My main heating area is a large rectangle with numerous rooms of each side. My M55 is at one end, kitchen at the other. If I take a damp paper towel and wipe any flat surface (in the first half of the room)....after 2-3 days of stove use, I get a light coating of gray dust/ soot/ash on the paper towel. ** If I take a similar towel to the top of my Mantle, above the stove ( see pic of my avatar) I get a much heavier amount. *** If I wait 7 days, the coating on the top of my mantle wipes BLACK! Both my ash tray and door seem to seal fine with no obvious leaks and a dollar bill doesn't slide out very easily. Enviro calls for a "hard" rope gasket, when I changed mine I did not order one from Enviro. I got the same size, 9/16 but its a softer gasket. Is it normal to emit a small amount of ?ash? And why is so black directly above and slightly behind the stove...on my Mantle? Thanks, and Happy New Year? Bill