I have built many of their models and as mentioned toothpicks break very easily. I started grinding toothpicks just to fit them. Until finally I got a click in 3 places where it was stuck deep in a gear that can't be removed and therefore can't replace the toothpick that should be there. All previous models I've worked with had metal pins. Why couldn't they use it for this model? Update: With an extra pair of hands we were able to move the stray toothpick and finally complete the model. It looks good, but no amount of voltage adjustment will make it keep time consistent. I'm assuming it's just a decorative item with moving parts.
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