Hey guys - new here, but not to living with ashes and soot. I just got an offer for a free Elmira Stoveworks insert but I have to remove it tonight. Does anyone on here have tips for extracting the unit? From what I have found online, its a matter of removing trim, then just sliding it out of the firebox. From what I remember as a kid, these were pretty airtight, and efficient (for their time). How do I remove the chimney liner? How is the unit sealed to the firebox in the fireplace? Are there any special tools needed for the extraction?