Hellow out there!! I have an Elco Pressurized Fireplace, installed in 1987, and has been working flawlessly since then. I have a fire in it almost every night from mid-November to the beginning of March. Just the last couple of days I have noticed that it seems to be smoking a lot, smoke escaping from the top of the fireplace glass doors. I'm burning mostly eucalyptus, with some oak, and a little pine. Does anyone know where I can get an operator's manual? Does this fireplace have a damper that might have somehow gotten partially closed? Any suggestions?