Greetings. New member to the forum. I am looking for what I think is Part 19 to a Morso 1BO. It is the small, removable "lid" inside the top of the heat exchanger that allows access to clean the inner portions of the exchanger. When in place, the lid keeps smoke in the stove and exiting through the flue. The stove requires two such lids - one for each half of the heat exchanger - I only have one. Any help will be appreciated.