My Chorus rear der is starting to crack. I think it's a pre-2001 9 speed which means that my Ergo shifters won't work with the current Campy 9 speed. While I'm figuring out whether to upgrade to current 9 or 10 speed, look for a pre-2001 9 speed rear der, or go w/ D/A, does anyone have any ideas on making a temporary fix? Is there any kind of adhesive I could fill the crack with as a temporary solution?