I am not technically incompetant by any means, but the Esse manual lacks a good deal (can't blame translation issues here) and I have a few extra pieces that aren't shown in the exploded diagrams. First, there appears to be a secondary damper on the flue connection box. It does not totally block the opening, but would certainly restrict the draft. It has only two positions. I am sure I have it installed correctly, but what is the function? At the front of the flue connector is a removable iron skirt. I assume this is for inspection? There is a piece of lightgage metal with fireproof insulation glued to it that fits this opening. Should the insulation be in or out? Also, I have two cap screws (approx. 1/4" bolts x 2" long with allen head) that do not appear to have a home. Lastly, there are two rods describing a rough Z-shape that are threaded at one end. What are these and where do they go? None of these parts appear on the diagram. Anything else I should know before loading her up?