One small suggestion as well, if I may. The escalator will repeat every 40 frames, all well and good. But animate the body separately -- dont parent it. The body is simply moving through space, so give it a position at the bottom of the escalator and then a position at the end and let it just move. As long as it's moving at the same time and with the same increase as the step it's standing on, there's no reason to parent it and deal with the 40-frame limitation.

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