Don't know if it's exactly the same cylinder, but on some of the Huskys which have Magura clutches they get the same problem and the feeling was that it's because the piston isn't very thick and as a result it rocks about a little within the shaft and the edges cause damage. Somebody came up with a new piston which is thicker, has better sealing and positions the piston in a slightly different place within the cylinder so even if you have damage from the original one it will still work as it's sealing against a different part of the cylinder which should still be pristine.
You'd probably find info on it quite easily by searching Cafe Husky if anyone's interested. Not much help if it's a different cylinder to yours, but at least it might explain what the original cause of the problem is. I never had that problem with my old Husky, but on two occasions the seal in the master cylinder did fail and leaked quite badly. It was easy to see where the fluid went those times though!