Not the person you asked to, but I also get a lot of vibrations below 3k rpm on lower gears, but surprisingly not in high gears like 4-6.Just got my bike last week, put 200 miles on it. I noticed the same thing, can't rev above 5000 unless I try really hard. did yours get better?
The engine becomes quite smooth past 3k under normal/small load (not accelerating hard). This coincides with the recommended gear shifts at appropriate speeds written in the owner manual (e.g. shift to 3rd gear at 54 kmh).
The engine/motorcycle also shakes quite a bit under heavy load (i.e. hard acceleration) in the lower gears (2-4) between 2k and 4k rpm I'd say.
I have never gone above 5k yet as I tend to shift quite early, but it's definitely smooth above 4k.