I found a 1989-90 Grizzly wood stove insert with catalyst that the owner is selling for $225.00. There is a problem with the damper rod. The owner tells me the stove gets so hot that the rod disconnects from the damper plate. He has had it reconnected in the past by a guy who used to do chimney work. I need to know if there is a permanent solution to this problem. I don't want to pull a 575 lb. stove out of the fireplace every time it comes disconnected.