Knowledge Base
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Arm Moves Unexpectedly
You might find that after some time your Marty's arm starts to move unexpectedly, this can be caused by spinning the arm around which then puts the arm gear in the “incorrect” position. When Marty waves the expectation is that the arm and the arm gear are in the “correct” (arms straight by the sides) position.
It's possible to spin the arm around which then causes the arm gear to be in the incorrect position, even though the arm still looks like it's correct.