I spent some time today replacing the flue flange gasket on my Quad Castille insert along with the combustion blower gasket. I replaced the flue gasket because I could smell smoke, but it appears that a new gasket did not work. It smells so much that I get a headache instantly, but there’s no visible smoke and my CO detector is not going off. Honestly I am about ready to junk this thing and get a Harman Accentra. The Quad is really poor quality and I’ve been thinking about upgrading to a better stove for several years now. I don’t know whether to pull the trigger now on a new stove or try to fix this stupid thing for another year. Any suggestions or opinions are welcome!