Have you tried this: www.vibranator.com?

I had the same problems since new for over 16000km or 1.5 years, and I had done the re-torqueing of various nuts and bolts, then came across the above. I had to combine that with bar-end weights to give me the best result. Still it wasn't noticeable immediately after installation, it took about 100km or so for everything to settle in, and it does seem it works. Now it's the smoothest since I got the bike.

What also came to mind is my dealer did an adjustment to the injection and the exhaust. I am not very technical, but I believe it might have to do with the way the airflow/fuel injection relates to the engine performance. I suppose the purpose of a PC of smoothing out the engine has something to do with this vibration problem, instead my dealer has the equipment to do the modifications directly. Mind you, the result still wasn't great after such adjustment by the dealer. The best result I have is from the combo of vibranator and the bar-end weights. Hope it helps.