Mmmm... looking at bigg red site im thinking about just sending all four calipers off to them for a refurb. Pricing up two sets of refurb kits at ~£60 for both axles, 4 new sets of sliding pins/bolts at ~£11 a caliper, bleed screws at £9 for 4. That totals almost £120 in parts alone. Then have the faff of cleaning, prepping, painting and then the actual work of refitting all the seals.
Anyone had calipers done by them? Idea on prices? Only trouble is they would come back silver or gold instead of black but such is life.