When I first put the Niner back together after repairing the trashed eccentric bottom bracket, I scrounged for parts in the bottomless old-parts pit I have stashed in my basement. I believe that it was about three beers into the build when I was groping around in the darkest recesses of my long-discarded old parts that I came up with a pair of matching grips. ODI lock-ons. I was set. I slapped the grips on along with a borrowed Fox F29 and off to the Six Hours of Warrior Creek I went.
I noticed that after a few hours of riding, even with the fancy-schmancy suspension fork, that my hands were hurting a good bit. I've been riding rigid 99% of the time for about a year now, and my hands have grown accustomed to a little soreness. This however was more of a deep bone soreness.
A few days after Warrior Creek, the rigid fork went back on the bike. I never had this kind of soreness before riding rigid, so I thought I'd go back to it. The pain was worse...alot worse. I looked at my trusty ol' Rig hanging on the wall which I had ridden all winter with no hand pain(fully rigid with a carbon fork) and finally figured it out - it was the grips.
The ODIs are a slightly smaller diameter, and made of slight stiffer rubber. I swapped them out for my trusty OURYs, and the problem went away. 3 hours of tough terrain Sunday and another bumpy ride tonight, all with no hand pain.