I'm getting ready for my Hampton HI300 insert to be installe in two weeks. We have an 8X13 flue with Teracatta lining right now. When I stated that I wanted an insulated liner with the install...the dealer is stating I will need "poured insulation" because there is not enough room to fit a "wrapped insulation" kit. Does anyone have any feedback on poured insulation as opposed to wrapped? I am a newbie to all of this, but after webbing this site to death over the last month...it is clear to me that an insulated liner is the way to go. Any feedback would be appreciated, I just want to make sure everything is done right the first time!