Bike has been into dealers and they have fitted a new slave, bled the system and tested the bike. I went to pick it up and I still have the same problem
The mechanic wasn't told the symptoms by the guy that booked the bike in! The mechanic says that only a leak can occur from the slave and not a pressure drop. The pressure drop has to come from the master cylinder end. I don't understand this statement. Anyway they are changing the master cylinder tomorrow - I hope that sorts it as I am off to the Alps next Friday!