Hi everyone, when dismantling my esse dragon mk2 a couple of the cast iron parts have snapped where they were cracked. Can you please help me identify the names of these parts so I can try to find spares? They are at the back of the stove where the chimney attaches. They are the little flaps that are meant to swing (I think?!) and the part where the chimney attaches. I'm attaching a pic where they are intact and then a pic of my stove where they are broken. Am I best to try to get them welded or source spares? Thanks!