PAM212 Chrono stopping..

[PGERRITY]

Anyone know what would cause this? When the Chrono comes around to the :58 it freezes, and if I tap the case it starts back up. Also if I stop it and reset the Chrono and then tap the case, it will go forward about :05 seconds. It also stops the timekeeping as well. I let the Chrono run for a while and noticed it was 15 minutes slow, then realized it was stopped completely but the small seconds were still running
https://vimeo.com/188423092


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