This problem is only noticeable on the Chronograph seconds hand but I am sure it is happening on the sub seconds too, just too small to see. When I run the chrono on this standard configuration A7750 (Carrera Cal.16) I can see the seconds hand skipping. it appears to stop for a beat and then skip ahead a beat once in a while. Is it time to service this movement? If so, just out of curiousity. would this be caused by a lack of lubricant or possibly too much lubricant? When I find an irregularity I always like to understand exactly what is occurring within the movement to cause the problem. Any watchmakers out there that might be able to enlighten me with some diagnostics.com I would appreciate the lesson.
Signed, Confused , also signed Me, Mike