[quote=smfinley]I am fairly new to the 21 and haven't taken the beams apart yet to look inside. They are interesting, each corner telescopes independently. So there is a chance you could secure the beam in the collapsed location with little modification required. However I am not sure if there is enough structure/support when collapsed. at a minimum you would likely need to drill holes to allow the beam to be bolted in the collapsed position. I also wonder if a cross bar swap with an SC would work, or if the mast base is different. I know the SE masts are very hard to find.[/quote]
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