With such limited ref material its really hard to say.
From what i can make out I have a feeling the legs didn't actually work on their own and the pistons were static and weren't actually attached at the top end. So they may have just sat on top of the frame ring when deployed and then could be randomly slid up out of the way without needing to telescope in for shots when in the stowed position.
You can see in the pic below of the TM in storage that the front right leg is tied in the stowed position by a blue cord, with the piston sitting flat on the leg as though it is not attached anywhere on the other end (you can also see the missing footpad sitting on the deck at the back).
For convenience they may not have given it any definitive attachment point at the other end; which leaves it up for speculation as to how it may have been configured to really worked.
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In this pic you can see the two pistons are sitting at different angles with the legs up in the stowed position: the left one resting on the centre column and the right one resting on the frame ring.
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Then this one of the display at ComicCon is confusing because the piston looks like its just butted up against the frame ring with no fittings.
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