this happened to my seat/rails as well. eventually when everything is tightened down the rails fit into place better.
I was thinking this too, but I'm scared to crank down on them too hard (they might collapse/snap or something). Even though they say it's Ti where you clamp down, I still worry.
Are they oval carbon rails?
They're carbon rails, with Ti in the clamping area. It's the Carbon Rail/Shell Aliante. I'll check tonight to see if they're oval or not.