Is there any model#/year identification on campagnolo derailleurs? I have a set of 2007 Xenon ergo shifters and an unidentified year veloce rear derailleur (cheap ebay find from some time ago) along with a new Miche 9 speed 11-23 cassette. The shift increment is too far by a fraction of a mm. I'm wondering if I could have a pre-2001 rear derailleur. I ordered a new derailleur from universal and it looks identical except for the cage - old one has a cut-away on the inside, while the new one does not.