Just looking for some advice here....I currently have an older/smaller stove with a Forever Flex, insulated, 6” stainless steel liner that runs the full length of my chimney. Soon we are having a Regency i2400 insert installed. I guess I’m being paranoid, but I’m wanting to make sure that the new stove will not be “too much stove” for the liner I currently have. The dealer offered to sell me a new liner, uninsulated, but I didn’t see the need to fix something that isn’t broken, especially when the one I have is insulated with wrap. Does anyone see any concerns?? Thanks!