The threads are 10mmX1mm rear and 9mmX1mm front, so Campy cones won't work. You should be able to choose some suitable Shimano replacement cones from the wheels site and have your LBS order them.

http://wheelsmfg.com/tech/PDF/wheels_cone_chart.pdf

I just wish that my digital calipers hadn't decided to stop working.

They have axles, too.