Thanks to all who have posted to this thread. After 30+ years of riding clipped, I too could not find replacement cleats for my Diadora shoes. Your posts really helped me decide on on Pearl Izumi laced Road Tour shoes to go with Shimano 105's on my '88 Bianchi/Campy Chorus. Now after a couple of short rides. the transition was painless to learn. The 6deg float does feel very sloppy after so many years locked in with no float. Maybe will get the red cleats soon.