Not that I know of. If its too stiff like mine, its in the clutch assembly. I'm also going to change the slave cylinder with the same brand. Mine hasn't failed yet but why wait for disaster.
Had that happen on mine... Pedal got stiffer and stiffer, even started squeaking when depressed... Got to the point that i couldnt even push the clutch pedal no more... Slave cyl completly locked up...
Just thought id add that for the write up