I have Campy Chorus levers in the post '97 style. I'm aware they changed internally for 2001, but I can't see any external identifiers to differentiate pre 2001 from later. How is this done?
All of my drive side components are '97-99 9-speed Record TI, and I understand it is desirable to have pre-2001 levers.
I've searched BF and elsewhere and can easily find how the insides are different, but not how to ID them.