Just wanted to say a quick thanks to all that replied to my request for help on the Campy crank bolt. As many of you suggested to me the answer was very simple, I was using a very old socket set (was my Grandfathers) and the 15 mm socket was too "thick". I grabbed a much newer socket from work and the wall was much thinner allowing to fit into the recessed area and over the head of the bolt....cranks are off and I am moving on!!!