Might be adjusted wrong mate... ie not disengaging fully when you press the pedal down... i think there is a ratchet mech near the clutch pedal when self adjusts out cable slack etc ie maintaining biting point... this maybe at full adjustment and need resetting.

Its like that on my sierra but i haven't done a clutch on the rs YET.

Also a mate of mine once fitted a clutch the wrong way round... wouldn't disengage

Rob,