I have a Butler Farmstead building that I built in 1978. A few years ago I ran a tractor into one of the sliding doors (don't short across a starter to start a tractor) and it looks like crap. I can't find anything about these buildings anywhere. I think they quit making them. I wonder if any other company continued to make them or if there is somewhere I can get the tin to go on the door. It is corrigated differently that anything else I have seen.