Warped are the UK dealers but you could try Punishers over in the states if you have no luck over here,i have dealt with Punishers before and found them to be reliable and quick.
agreed don't go to o ring monkey there orings don't seem to work in luxes very well
dbs in america are the best place they sell authentic dlx ones i think there about $80 for a 5x oring rebuild kit or they do a players kit (eyes, detents, screws and orings) for about $180