Well, there will always be flaws, bigger or smaller. These are so small it really does not matter.
To think of it, factories cannot and should not ever make 1:1 reps. Imagine if they would, all the countless scammers then trying to resell them as Gen's. If that would ever happen big name brands would get really mad and potentially go after Chinese factories and our hobby message boards. Right now they don't care as much cause you can tell Rolex and Panerai reps easily in pictures and they even have rep collectors policing the auctions and reporting scams.
So imagine that... all those big brand boys come to RWG, read around, see many of us buying their genuine watches and reps and also reporting scams sales. Seems like it works out for everyone in the end somehow.