This particular German wall clock (probably 1920s) was in the shop 15 years ago to be cleaned and adjusted. The owner got it back and it would not stay running. The clock shop looked at it and said perhaps the only thing that could be done is to put a quartz movement in it. It returned to the wall of the owner's home to collect dust. 15 years later it comes to me. I tried a few tricks, but could not keep it running. So, I cleaned and freshly oiled it. No bushings were needed. Same problem, could not stay running. So, I adjusted the escapement and I got it to run. Although it is running, I notice that it prefers to be slightly off balance. Is this an indication that there is room for better escapement adjustment?