I have a VC small winter warm insert. It is about 15 years old. I'm having an issue with it pulling air from somewhere. All of the door gaskets are good and were replaced about a year or so ago. I did the trick with a sheet of paper all around the door seals and they're nice and tight. What other gaskets are there that could be letting air in? I'm pretty handy and don't mind taking things apart and repairing / installing new gaskets. It's making me crazy that I can't regulate the airflow and I'm flying through wood! You folks have helped me in the past and I appreciate your time and advice!