I have just purchased a second hand Howard Miller wall clock. It has an 8 day key wound movement with 3 winding stems, Westminster chimes (5 chime rods) and while I don’t know how old it is (I’m guessing it's approx 10-15 years old at most), it looks like a brand new clock. Furthermore, the movement has just been completely professionally, serviced, cleaned, re-oiled, and re-assembled. I’ve had it leveled and running on my wall for two days now and it keeps time beautifully. The only problem is that the chime mechanism doesn’t always chime when it’s supposed to. For example, it ran perfectly for about 5 hours then stopped chiming completely for several hours. After about 3 hours of not chiming, it then started chiming again but stayed about 1/4 to 1/2 hour behind the actual time (for example, chimed OK at 8 pm, skipped chiming again at 8:15 pm, chimed again at 8:30 pm but chimed the 1/4 hour at that time, chimed the 1/2 hour at 8:45 pm, etc). Once in a while, it catches up and chimes properly for a number of hours then starts skipping again. For example, it chimed properly for 12 hours from 1:00 am to 1:00 pm, skipped chiming again at 1:15 pm and chimed the 1/4 hour at 1:30 pm. Sometimes it misses chiming on the hour then chimes the full hour that it just missed but chimes it late, at 1/4 hr or 1/2 hr past. Currently it is chiming only intermittently. It may or may not chime on the 1/4 hour as it’s supposed to and if it does chime, it may or may not be in sync with the actual time. All of the winding stems have been wound tightly during this entire period and I have checked to make sure all packing materials have been removed from its recent shipping. One last point to mention about this clock and that is that when the case is mounted completely level, the beat is slightly uneven (but it keeps perfect time in that position). In order to get the beat to sound completely balanced and even, I have to tilt the cabinet 2-3 degrees or so off level to the right. I am wondering if that could be affecting my problem at all (I’ve been running it in the completely level position with a slightly uneven beat). I would appreciate any suggestions as to how to resolve this problem. Returning it to the servicing dealer is not a good option since they are a considerable distance away.