I think I know the answer to this, but can you swap out a cast 39 base for a steel 39 base. It appears the holes and such line up and the base is the same size but the cast base is probably an inch or more taller than the steel base. Therefore, the side panels and doors would hit the base when mounted to the steel base as there is more overhang on the cast base? You would have to extend the frame to make work?

Keith

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