I’ve just bought some new Zonda wheels and have fitted the Ultegra 10sp cassette (also new), which seemed to go on OK. However, I notice that both the wheels and the cassette came with spacers to be used when fitting 9/10sp cassettes on to 11sp freewheels.
The question is: do I need both the Campag spacer AND the Shimano spacer, or will just the Campag one do? I have tried with just the Shimano one and it is too thin on it’s own.
For the record, the rear hub is the Shimano compatible version.
The reason I ask is that I am having a little difficulty setting up the gears.