Hello Coaly: Acquired a little used Mama Bear about 30 years ago. I stored it in the basement and did not use. Until now! Or will use it after my new outside shop is completed. I have the firebrick in a box (took out of the stove to save weight in moving - Duh!) and now need the layout for the brick, as you showed for the Papa Bear stove a couple months ago. Except for the Mama Bear. Do you have such? Also in reading the Fisher thread, there is talk about adding a baffle. My stove is not the older one, but it does have a square opening and square door. And no inside baffle. Just a plate beneath the 6" flue. Can I add a baffle? Should I? Any help will be very much appreciated. Thanks in advance.