Originally Posted by
desconhecido
Campy had two incompatible 9 speed systems. 97 and earlier are not directly compatible with 98 and later. You can tell which series you have by the hoods -- pointy hoods are the earlier ones.
I'm not making this up, look here:
Art's Cyclery Blog » Science Behind the Magic | Drivetrain Compatibility
edit: apparently I fooled up on the date of the change from old system to new. 2001 was the year, but I don't know if 2001 was old or new.
This is what I was referencing. I'm pretty sure I have the old style because the hoods are pointed and they have Chorus printed on the lever, but that article left me unclear as to whether I have to look for the location of the B screw on the RD or if the graphics could tell the story.