Hello everyone, first time posting here. After looking through the broad spectrum of topics here I can’t seem to find an answer to my question. I’m trying to reinstall a “metalbestos model ss” chimney on the back of my house. (Moved from the front last year). The original tee was very used and burnt out at the bottom so I decided to replace it. I found a tee on Craigslist that also came with extra pipe and a cap that I needed as well, win win I thought. After starting to install it today I tried connecting the sections of the old pipe with the newer stuff, both metalbestos ss, and the older stuff is about 1/4” bigger in diameter and won’t “lock” into the newer stuff. Has anyone else had trouble with this? Is there some sort of adapter that not aware of? Thanks in advance!!