Xesh":gv6h0moe said:Are they removable bosses? I've seen a couple of frames where the spring holes are in a separate plate from the brake boss itself. Obviously it's possible to fit the plate in the wrong place if someone doesn't know what they're doing.
That said Raleigh ones are usually welded/bonded on. You could use something like XC Pro/Dia Compe cantis that don't use the spring hole if that's the case.