Not sure Ross, have you tried tapping them out with the pin or a flat head screwdriver and hammer? Just because there's a groove may not mean they're screws.

David

: Thanks, that worked a treat. Do you know if I can remove either of
: the links with screws in them? - they're the one's right next to
: the clasp - one full size and one half size. Really want to lose
: the half size one, but the screws are REALLY tight

: Ross