I changed all mine at 600 klms.I really wanted to do it sooner,but just never got around to it.Between work and family and housework and yardwork--
My bike had syn 3 in all spots and i do have to say i was VERY surprised how it came out.It was a honey colour, which indicated from the engine at least,that not much contamination had occured.There was NO fuzz on either the engine or g/box plugs;although a bit on the primary one.Interestingly enough,the oil in the filter was pretty black .
I put Mobil synthetics and F/plus back in.That will do until my first service sometime early next year.My oil and filter changes will be twice a year because my riding is sporadic.