If you are doing a serious brake overhaul you might like to contact Peter Ballard (PJB on Talk Morgan) but he has not logged on for more than 6 months. He can be contacted at www​.suspensionsupplies.co.uk/

He told me some time back that there could be a problem with the way in which the master cylinder was fitted that reverses the front circuit (intended for disk calipers) and the rear circuit (intended for drum brakes). In this case something to do with the system can lead to problems of corrosion in the rear slave cylinders. I don't remember the details but I am sure he will be able to tell you what it was.

Peter

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