So I go to build up my bike and find that when I last had the cassette out I somehow managed to mix in a shimano 11t with my campy. Curses! I clipped the zip tie and started to mount the cassette and BAM, last one doesn't go on.

Anyone have just an 11t campy cog to get rid of? maybe you have an old worn out cassette that you can't part with. Maybe you've lost or broken other cogs in a cassette. Maybe you work in a shop that keeps small parts like this just in case.

Help a brother out!

Thanks
Matt