You also need to be just a little careful about the lockring if you are starting on an 11T top sprocket - Campagnolo cassettes come supplied with the correct lockring for the size of top sprocket (as you would expect) but if you have one of the older bodies that requires a differently-threaded lockring from the current type, you'll need to take the size of the smallest sprocket into account.
HTH
Graeme
Velotech Cycling Ltd
Main UK Service Centre, Campagnolo
You also need to be just a little careful about the lockring if you are starting on an 11T top sprocket - Campagnolo cassettes come supplied with the correct lockring for the size of top sprocket (as you would expect) but if you have one of the older bodies that requires a differently-threaded lockring from the current type, you'll need to take the size of the smallest sprocket into account.
HTH
Graeme
Velotech Cycling Ltd
Main UK Service Centre, Campagnolo