"Up and locked". The way this gear operates is really cool. The key to making it work was to assemble it in the up position, as shown here. I didn't know that at first, which caused a lot of parts to fail. The placement of the collar, which is about at the center of the strut, is the most important step. It must be placed and locked in place in the up position, while allowing the strut to rotate inside of it. This sets the geometry for the whole system to operate correctly.

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