I have been checking out my new stove. I have a question about the secondary air intake on the back. When I first took off the cover plate, I thought the shutter opened up to give more air as the catalyst got hotter, since when it was cold the shutter was closed on it's stop. When I fired the stove up and engaged the catalyst, the wire that moves the shutter moved down. As far as I can tell, the shutter never moves, only the wire. I have attached a picture showing cold (no fire), medium (450 stovetop - catalyst engaged), and hot (550 stovetop - catalyst engaged). How much is the shutter supposed to be open when the stove is cold? When the catalyst heats up, is the shutter supposed to open (more air) or close (less air)? If this factory setup is wrong, what do I need to do to fix it? Shorter wire? Rotate the thermostat? Something else? Thanks in advance. You guys are great!