Andy at BHM has managed to locate an early style clutch master cylinder for my 2012 M3W. Hopefully this will fix the problem, otherwise I may get M3W services in Montignac in Aquitaine, to pick up my car from its storage near St Tropez and do a whole clutch job, including Phil Bleazey's upgrade for the Centa, new clutch springs and slave cylinder. The car has only done 5/6000km since the Centa upgrade with new clutch, so disappointing if the original has failed this early. I would also get them to change the bevel box oil for Redline Heavy Shock Proof 75W250, as it is getting a bit whiny.
Wilson