How do you wind the lower calendar movement on a Boardman Hubble clock? The lower movement runs for a year. It has a hole on the lower right side so as to wind it with a long key. When the key tries to wind it, the rollers just rotates to the next days, but the small spring does not wind. Is it possible that there is a small part missing that helps to engage the winding of the spring? I will try to send a photo of the lower movement.