I [video]https://youtu.be/F1tl_qakUHA[/video] This is a video of an old Herschede 5 tube that I looked at today. It chimes at 15, 30, and 45, but only does the hour on the hour. Where I'm confused is, the chime and strike are on the same tumbler, but it locks up after it does the hour. Consequently, when it goes to do 1/4 after, the tumbler is in a different position after each hour. If I manually sync it and (just for example sake) it strikes one and stays in sync for 1/4 after, the next go around when it strikes two the tumbler has now advanced further to play the second strike so the 1/4 after melody is now out of sync. I realize the melody is not synchronized in the video I just shot it quickly so I could study the mechanics. Has anyone toyed with this one before? I would expect the tumbler to shift and rotate the equivalent of 12 strikes, play the actual hour and the remainder of 12 shifts out of play every time in order to keep Westminster in sync. The way it functions now it syncs itself every 3 hours.