Recently purchased the heritage and had planned to have the dealer install it. Now I'm not so sure. I questioned them on their install plans and they want to "cement" a loose fitting stove adapter (Simpson brand) to the stove top collar before attaching dbl wall pipe. I called a neighboring dealer and his response was " Tell Them No!". (That was my first thought) "the dbl wall pipe itself will fit the stove collar." Why would you glob a bunch of cement to the collar of a a $2500+ woodstove. Am I missing something here?