Atlantic EH has the "round" "0" Vinton rings other than the OEM square rings..
I'm not sure why you would rebuild clutch slave after only one year. It should last I'd figure a couple at least. I've got 34k on 525, and have only rebuild slave twice since 2001, with no issues.
Have you used any crank case oil additives like Lucas?.. it can create symptoms you describe.i call it hot dry clutch syndrome.
The brake master cylinder rebuild kits.... I'm sure they would also have a lead...
But if they are not creating a problem.... I'd just change the fluid. Our Xs are due....
FlatlanderssupportingXworld
Bruce