I'm a tinkerer, not a clock expert, background in aerospace & technology. I just installed a new-old-stock Urgos UW32/1A mechanism in my 45 year old grandfather clock. It seems to be running fine so far, but I can't get the chimes to play at the right time. Rather than trial & error tweaking, I thought I'd go to the experts first. I started the clock and waited until it chimed the hour; it chimed 3:00. Then I stopped it and set the hands for 3:00 by installing the hour hand on the 3. I put the minute hand in place and then moved it forward to the 12:00 position. So I could check the time accuracy I waited for 3:00, and then started it swinging again. The problem is that it chimes with the minute hand on 56, rather than when the hands are on the hour. The quarter hour is at 11 minutes, etc., always four minutes early. I'm looking for advice and/or insights. It is probably simple, once the function is understood. Also, I've always heard that you shouldn't move clock hands backwards, only forward. Is that correct?