While cleaning up a Campy NR rear derailleur, the nylon washer/bushing from the bottom pivot fell to the floor and disappeared into the netherworld of my bike work shop. Profuse cleaning (of the shop) didn't turn it up. Would someone from the list have a line on Part No. 810/1A from the Campy Catalogue No. 17. It fits between the pivot bolt for the jockey wheel cage and the lower assembly of the derailleur body. This is for the Colnago I'm cleaning up for the Cirque. I'd be much obliged if someone could turn up a spare.