Seems that my glass is leaking air. The inside of the window gets COVERED with thick black soot, as does the rest of the stoves insides. I've tightened the screws on the clamps. Next I'm going to clean very well and seal the outside of the glass/door joint with hi heat RTS and see if that does the trick. Unless you want to talk me out of it! Last thing we need is a fire... The caulk is rated for 800°. I have no idea how hot the glass gets. Anyone have any thoughts on this?