Last fall I had a Jotul Greenville stove installed in my fireplace. The installer left the flu collar in the top exit position and had a hard time connecting to the existing liner but finally got it done. I have been happy with the stove but after installation I read a bit more about this stoves installation and I would have preferred he used the rear exit flu collar with a tee pipe to making cleanings easier and this would also allow the stove to sit further out on the hearth. He came back recently to do this but left with my stove disconnected as he didn’t have the required tee part. His office emailed me a few days later and he said his supplier does not make a 5 ½” liner tee with a 6” snout to connect to the stove so he could not do what I wanted. He said he could give me an estimate for a new 6” liner which will be expensive. Reading the manual it does state that 6” single wall or 6” double wall should pipe be used. It appears that my liner is 5 1/2” rather than 6”. I’m not quite sure what I should do at this point. Any suggestions?