Ok, might not be using the correct terms. I got a used cervelo s5 and it's in pretty good shape. I'm building it up and put the saddle on, and it's nosed down a little. Need to adjust it up a tiny bit. Problem is I can't get the thing to budge. Not having experience with one of these posts, I'm not sure how much muscle I should give it. When I loosen the only screw that I can, I can get the two sort of "wings" that hold the saddle rails down, then the half of the circle comes out and I'm left with the other half that has some kind of serrations on them that fits a hole in the seatpost. That thing doesn't budge at all. Any ideas? I'm not sure if this clamp is similar to ones on other Cervelos. It appears to be different from the last two iterations of this frame, but thought someone out there might be able to help.

Can I whack away at this from the other side to try and loosen it up? Is there something I'm missing? Any help is appreciated.

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