It's taken me a while to find this/take a photo, but sorted things out in the end:
No need for you to pay anything for it seeing as I remember you as a good customer from my recent bumper MTB clearout on the site, just glad to help. And of course the canti boss isn't the colour you'd most prefer. But I'd ask if you could pay £1 to cover postage costs. Possible you'd still have my payment details on a PM, but if you've since deleted them then let me know.