I suffer from Raynaud's syndrome,Vibration White Finger so am very susceptible to vibrations.I've tried most things including lead shot etc.These only serve to move the vibrations to different rev range so only shift the problem.
The single best thing I've found and now cannot ride without is the Vista Cruise Control,
http://www.aerostich.com/nep-cruise-control.html
This allows you to rest your throttle hand.I also use a different throttle/Clutch technique on longer rides by lifting my thumbs on top of the bars which eases fatigue on a straight traffic free situation.
I've cut my vibrations down to a bare minimum by getting my engine as smooth as possible.

All engine mounting bolts are secure.
Accurately balanced carbs.
Dressed tappets,
http://www.sheppola.karoo.net/TwistedTwin/TappetsDressing.htm
Large grips help especially if they are the more solid foam type,
http://cgi.ebay.com/ebaymotors/Univ...4398769QQptZMotorcyclesQ5fPartsQ5fAccessories
but if the foam is too porous they can get sodden so spray with clear silicone as a water-proof.
These grips are decent on one of my CX,
http://cgi.ebay.co.uk/New-Custom-Mo...12?pt=UK_Motorcycle_Parts&hash=item3ef5ae0178
HTH
The single best thing I've found and now cannot ride without is the Vista Cruise Control,
http://www.aerostich.com/nep-cruise-control.html
This allows you to rest your throttle hand.I also use a different throttle/Clutch technique on longer rides by lifting my thumbs on top of the bars which eases fatigue on a straight traffic free situation.
I've cut my vibrations down to a bare minimum by getting my engine as smooth as possible.

All engine mounting bolts are secure.
Accurately balanced carbs.
Dressed tappets,
http://www.sheppola.karoo.net/TwistedTwin/TappetsDressing.htm
Large grips help especially if they are the more solid foam type,
http://cgi.ebay.com/ebaymotors/Univ...4398769QQptZMotorcyclesQ5fPartsQ5fAccessories
but if the foam is too porous they can get sodden so spray with clear silicone as a water-proof.
These grips are decent on one of my CX,
http://cgi.ebay.co.uk/New-Custom-Mo...12?pt=UK_Motorcycle_Parts&hash=item3ef5ae0178
HTH
