That's a hydraulic clutch so there's no real adjustment to it - the fluid will simply fill up any space you create by adjusting it. However, there should be an adjustment for the length of the pedal shaft into the master cylinder and yours may be a tad too long. There should be just a bit of play between the end of the rod and the piston in the slave cylinder (I don't have a number but I did mine with maybe 1/16" or so) and it sounds like yours has no play. See if you can make a little clearance there.

A disclaimer - I'm using the S-10 clutch master and the Mercedes slave and made my Chevy mater cylinder linkage work on the Chevy master so yours may be REAL different. Still, the Chevy system is pretty common to almost all cars.

Dan