not sure if this is a serious problem or not.
There is a chrome button on top of the rear which I am taking to be a breather. After a ride (even 10 miles it will be present) there is a weep from the area of the chrome button, sometimes just a mist, once I saw it as a dribble.
I am the first owner. It is an ex demo model and now has 5000k on the clock, I have had the bike for two weeks.
Seems the oil level may be critical in the rear drive unit on these coveted machines.
The misting/leak gradually got less. Recently I found time to get to the dealer. Although they originally assured me it was correct, this time they put a measured amount of oil in and now I'm happy to report there is no further problems.