I know this topic is a bit old, but I was having an issue where I could normally shift ok if I was quick about it, but if I had to hold the clutch in (at a stoplight or something like that) it would slowly release on it's own. I'd have to pull it out of gear, let the clutch pedal up for a minute, and then it would be driveable again. I figured it was because either the master or slave was leaking internally around a seal.
I got the slave/master kit from tellico4x4.com and it comes pre-assembled and bled. I did notice that it came with a place for the allen screw but without a hole under it, I took the screw out of my original and put it in just to be safe. The original had a hole under it, so some fluid came out. The new system worked great right away and I can hold the clutch as long as I want, but I have a feeling that it's still not disengaging the clutch as much as it should. I wonder if we could just replace the screw (after putting a hole through to bleed with) with a one-way self bleeder screw and then bleeding more easily that way? Any body ever tried that?