My original sleeved master is out for rebuild and I noted that the high pressure mating surface is pretty much wrecked. It looks like it collapsed and that is likely the obstruction I’ve been chasing since the hole is less than a 1/16" at this point. I sent an inquiry to Apple to see it there is any way to machine a new one, but meanwhile the repros seem to be the right dimensions. Has anybody had good results with them or is it likely to fail in a month?
https://xks.com/i-7142484-jaguar-e-type-series-i-clutch-master-cylinder-c20775.html