Ahh, campy taper spindles. Such a pain in the ass, but so worth it in the end... I hope. You can try a Miche BB, which has a 107mm campy taper spindly, and is adjustable left-to-right, so your chainline should be near-perfect. For a high end option, try Phil wood. I'm sure their BB system will sort you out, for $150 or so.