At this point (after shipping the robot), I'm really looking forward to doing laundry, eating a square meal, and getting to bed at a reasonable hour. - Emily Pease [more]
But after looking briefly at your robot this year, my guess is that they are somehow related to the arms... perhaps they are for driving when the arms are raised in some way? I dunno, but I'm just using my wildest guesses.
He's the closest one yet!! He's getting warm......