Here are some unanswered questions. Anybody want to take a crack at a reply?
https://www.hearth.com/econtent/index.php/forums/viewthread/300/
https://www.hearth.com/econtent/index.php/forums/viewthread/312/
https://www.hearth.com/econtent/index.php/forums/viewthread/327/
https://www.hearth.com/econtent/index.php/forums/viewthread/329/
https://www.hearth.com/econtent/index.php/forums/viewthread/354/
https://www.hearth.com/econtent/index.php/forums/viewthread/300/
https://www.hearth.com/econtent/index.php/forums/viewthread/312/
https://www.hearth.com/econtent/index.php/forums/viewthread/327/
https://www.hearth.com/econtent/index.php/forums/viewthread/329/
https://www.hearth.com/econtent/index.php/forums/viewthread/354/