he everyone. So I’m changing out my 8” chimney and single wall to a 6” chimney and 6” double wall. I also decided to change out the oval flue collar to a round flue collar however the round flue collar does not fit quit right. It doesn’t seem to sit tight enough on the gasket channel on the lower part of the stove. Any suggestions other than the obvious which is get rid of the stove. A new stove is not in the budget after dropping a grand plus on the chimney and stove pipe.