Try softer grips.
I suffer a lot less from wrist pain and calusses now that I ride with very soft grips (full waffle). Mind you, it's not for everybody since its a different feel of the handlebar, but you can get them really cheap without further venturing into the suspension set up.
The con...
Those are some nasty grooves.
Sent my cylinder for a nikasil replate recently, costed me 220? just for reference. Way cheaper than a new cylinder (europe).