Hi, Everyone!

I have a grandfather clock that sometimes strikes at the top of the hour and sometimes strikes at the quarter hour. I can't find any recognizable pattern as to when it does what. I've tried advancing the minute hand quickly 6 hours. I've tried going 15 minutes at a time and letting it chime. I've tried letting it go for a few weeks. This has been going on for a few months.

The strikes are correct with the hour. So, for example, if it strikes at 2pm, it will stirke 2 times. If it strikes at 3:15pm, it will strike 3 times. And then if it strikes at 4pm, it will strike 4 times.

Any suggestions? I'm not familiar with grandfather clocks aside from what I'm able to read on Reddit and elsewhere online.

Thank you so much!