I was overhauling my winter/rain bike. When I was removing the bake pad holders on the rear caliper, the alloy spacer came out in 3 pieces (first pic) and I noticed the the caliper arm (pre 2000 Chorus) was cracked at the lowest point (second pic). Has anyone ever seen this? I've been riding Campy for 30 years and never had anything like this happen. Looks like it's another set of brakes for me.