Finally got the "factory built chimney liner adaptor" last night and as far as I know I have all the necessary pieces to begin my install. However, I've noticed yet another issue that I'm hoping someone can help with. My stove (Lopi Republic 1750i) has a 6" flue opening. One of my initial purchases was a 6" offset box due to the existing pipe being further back than the insert sits in the firebox. So, just now tried to sit the offset box inside the stove flue and (of course!) it doesn't appear to fit right. The inlet opening for the offset is actually 5 and 3/4". This causes the connection to not be a tight fit. Can I work with this or do I have to contact the manufacturer and get another one? Also, the damper control rod for my stove keeps the adaptor from being able to sit flush, so can I cut a notch in the offset connector to allow it to fit around the damper control rod? Thanks in advance for the help, and Happy Thanksgiving!