Originally Posted by
AstoN_B
For the record, a company called Past Parts can do refurbs/reconditioning of most parts. Needs sending to em and they can re-bore and seal accordingly.
Link here.
+1 was going to say the same we have used them at work and very helpfull, even got me a 25 mm master cylinder for my S2 few years back
They do seal kits aswell if you tell them the size casting numbers ect