Where's Dave S when you need him to rebuff this nonsense that Campy chains "stretch" more than Shimano (poster should first get a clue that chains don't stretch........they wear due to high mileage and lack of proper lubrication by the user).
I dispute that chains don't stretch. I just pulled a worn chain off one of my bikes and instead of sizing the new chain on the bike, I figured I would just measure off the worn chain. Same number of links on the new chain was 1 cm shorter. BTW, I clean and lube chain every ride - yes every ride. (Use mostly Tri-Flow.)