[eschaider]

If you are using a hydraulic slave, you have the option of replacing the current slave cylinder with one that has a larger bore. Alternatively, you could replace the clutch master cylinder with one that has a smaller bore. If you don't want to mess with the hydraulics, then you could modify the mechanical advantage your clutch pedal has when disengaging the clutch. If none of the above is appealing to you, then you could change your clutch out for one of the current crop of aftermarket dual disc clutches.

If none of this is satisfactory for you, then you are pretty much out of options and stuck with what you have.