Well some good news, whilst out today in London I got an email from Nigel saying he has had this issue a few times now on the master cylinders so does keep them to sell on separately which is good. Cost if the new master will be £50 so I may well buy that and try to find a seal kit to repair mine and keep as a spare. Doubt will get it though before I go on holiday which is a shame as dont want it letting go but that's just the way the cookie crumbles I suppose.
At least its good news though
