[Some of you may remember me posting this before. I just have a video now.] On my TFC savenger his shoulder/panel has loosened. That Grey Plastic bit should be solid, but it freely spins. And it's a real bummer because Hercules can't stand well. Lose TFC Structor (Scrapper). - YouTube See what I mean....it's loose.
have you thought about adding some glue to the pin area and re-aligning the gray gear to look like the right arm gear. also didn't you post an issue with another one of your bots before?