I have an Advantage II-T C freestanding stove. I began noticing a burned pellet smell coming from the back of the stove and blowing out into the room. I had the stove cleaned and the gasket replaced on the exhaust fan. I replaced the window gasket and checked the door gasket. I siliconed and taped all of the pipe joints but I am still getting the smell. Does anyone have any ideas about what could be causing this leak and where it might be coming from? The flame is fine so I can't figure out what the problem might be. I tried shutting off the lights and using a flashlight to see if I could see any smoke in the back of the unit but couldn't see anything. Should I replace the exhaust blower or could there be a crack somewhere that I can't see?