Second year with my stove- it has developed a rattle. I know what it is , I just don't know how to fix it. The thing that is rattling is the metal rod that connects to the baffle; it's brass in color in the front, its seems to clean the upper portion of the chamber, the tube section. Tried tightening it up but it still rattles. Only thing that gave some relief, is that a I thoroughly clean the inside of the stove removing the baffle and vacuuming the entire chamber , but it still rattles a bit now and then, even when I shut it down. So any thoughts?