so heres the story. I was to have a cabello 1700 installed few weeks ago. Installers came and it just wouldnt fit. And cabello 1200 was on backorder. Sooo dealer figured best option was a neo 1.6 due to mantrl and hearth sizes. So now its installed with full insulated liner. I have broken it in and its burning good nice and hot but the room just dont heat up. Wont even hit 70. I have a few inch gap at top of surround because my fireplace was oddly sized so installer is fabbing up a filler. I have no block off plate my question is.