It's weird. It only gives me grief at highway speeds and it's not consistent, sometimes it's nearly non existent and other times it's really bad. I'm starting to think it's weird harmonics issue with the stiffness of the OR suspension (or maybe even the KDSS contribution).
Being that it only happens at high speed, it leads me to think it's balance, but after 2 balances and triple checking the pressures, it's still there and I'm starting to think it's more to do with a bad vibration/rebound issue with the wheel/tire weight as it encounters imperfections in the road.
The terrible thing is my OR wheels rode beautifully. I shouldn't have messed with it.
I'm hoping that if I get an aftermarket suspension setup it will solve it or at least give me the flexibility to adjust it (if I get adjustable shocks).