I actually sent it back to the AD. They did not open the watch for two reasons it would void the warranty and they weren’t sure they would be able to handle the problem anyway. There watchmaker feels like it may be something to do with the dial. There’s absolutely nothing noticeable with very close examination with magnification. The watch runs perfectly normal. I contacted LF and they told me it would be OK to continue to wear the watch. I’ll send it in closer to the end of time when the warranty will no longer be available. However so far so good. It appears to be a minor thing but things like this drive me crazy