My Dad gave me a beautiful antique AI Root smoker for Christmas, but the bellows is completely gone. Does anyone have a template/ pattern to make a replacement bellows? Otherwise, I'll just have to wing it. Any info anyone has on how the bellows folds or is attached to the boards would be very welcome. Also, is it just a bellows, or are there any little flaps inside? All I have ever seen is the outside of my new one, and don't really want to tear it apart to see how it works!