I am swapping stoves and need to know if my double wall telescoping pipe is re usable? I am going to need to extend it a few inches from where it is now. It is screwed together at the top of the lower section of the telescope. (Hope that makes sense) So when I extend it there will be three screw holes visible. I believe that the screws only go thru the first wall. Is it safe to use until I can get a replacement? It's duravent and apparently everything is back ordered right now.
