Originally Posted by
jonny7
You're actually right here, but this way around makes the binder bolt even longer. When the serrations fit in the frame, there is just no way to tighten the seatpost. Then again maybe this hints at the real problem?
The half with the cut off portions is Campagnolo. No doubt the Campy bolt snapped (they are not very resilient and are easy to break even while being careful) when trying to over tighten it, now it looks like you may have an odd piece of hardware inserted that’s too long.