Hi, need help finding the piece of pipe that connects a Bat Cave Insert to the regular stove pipe. Anyone know what it is called and where I might can find one or have one made? Ok, here is a pic. The opening with the attached piece is 14x3", which is crazybe because it doesn't even fit, as you can see there are holes on each corner for the smoke to come out into the house? Oh well, if you can shed any light on this I would surely appreciate it!