managed to source the exact replcement pads 6ll698-151 seat/vw groupcode( not via the seat ) brb doin the happy dance a company called LINCOLN TPS they're based in newark not far from me ended paying £56 with the vodka ana tonic RESULT !!!!!!instead of using lot's of different punches . cut once in the centre of the retaining pins bend inner half slightly so as not to obstruct the outer half of the pin.use a 4mm punch (cut down to 20-25mm)tap through.next unbolt the caliper(you have to to get the discs off)remove the retaining clip off the flexi hose@top of back-plate, turn caliper wrong way round insert 1 caliper bolt tighten. using a centre-punch mark the centre of the remaining, pins using a 4mm drill, slowly drill the head of the retaining pin(like drilling the middle out of a pop-rivet)usthe 4mm punch drift through remove the collet bobs youre auntie