I am purchasing a Regency i2400 Insert from a local dealer, and when he put the quote together, he only quoted me a SS liner up to the first flue tile. I told him I wanted a full liner because, based on information I found on this site, it's recommended for the best stove efficiency. He told me that my chimney was too tall from the roof (it extends about 6' above the roof) and the pitch of my roof was too great so that the installers wouldn't be able to reach high enough to feed the liner down the flue. He said I'd have to rent a bucket truck (since he doesn't have that equipment,) and that it would be very expensive. The dealer insists that the partial liner will be just fine. Should I find another dealer? Or will the partial liner be ok?