Guys, as someone who also suffered from tingly hands after a ride on several bikes CBR600, ZX6R, Fireblade, S1K, I did a lot of research on the matter. I rode a lot of other bikes, including a GSXR1000 which the owner said was like a sewing machine - more like a steam engine compared to my Blade, which was silky in comparison. There are scientific papers on the subject out in Google Land. It is all to do with resonance created by the frame, engine, gearbox, suspension, and the rider, and there is very little you can do to fix the root cause, unless you have access to the sort of engineering resources that MotoGP use (and even they get rid of chatter which is closely related).
Heavier bar ends do help. Bar risers can be very effective as can rubber mounts under your wing mirrors. BUT it all depends on a zillion factors and finding the fix (which may involve several areas of the bike) is nigh on impossible.
In the end I realised the problem with my bike was actually me. My mate rode my bike and said no vibes. Odd, as I was convinced the thing was shaking itself to bits - just goes to show how we can exaggerate the problem in our minds.
In the end my left hand went completely numb (and do mean completely - I cut myself and didn't realise until I saw the blood dripping on the floor). I was suffering from very inflamed nerves in my left wrist and ended up with Carpal Tunnel Syndrome (no doubt brought on by the vibes). It was so bad I had to have surgery and guess what - no more vibes !!!!!!!!
Obviously body modification might be viewed by one as extreme, but not for me.
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