On my 3941, I noticed that the hand on the date subdial was well-centered on the dial marker at the end of the month, but that the alignment has gradually deviated over the past two weeks. I used the pusher to adjust the date to test the alignment throughout the month. The hand seems to be well-aligned from the 22nd-1st but out of alignment from the 2nd-21st. Has anyone else observed this on their 3940 or other PC? Is this an indication that service is needed?
Here are some images to demonstrate: