Hi YW Wong Yes, you are right. This was a technical decision not a design decision. It needs to have this little trace of grease. You can also see this on the 2nd and 4th picture of Mel's Mayu: ahci.watchprosite.com Regards Andreas Strehler
Hi Ken1 I think I know what you have seen. It is probably not the barrel housing but it is the rachet wheel. No worry about the track on the rachet wheel. It is the contact track of the wheel against the bridge. I've choosen this layout to ensure a perfect engangement of the winding wheels and the p