Mine did the same thing, there's 2 bolts that the clutch pedal/piston are mounted to, if you slacken them off slightly and pump the clutch a few times it should re-align itself then tighten the bolts. You have to be a bit of a contortionist though.
there was a thread here where a guy opened up the coverings below the steering wheel and found a thick, stiff cable loom that passed in front of the pedal, causing it to not release all the way. he unplugged it and routed it behind the pedal?
remove lower trim panel under steering wheel in drivers footwell, (2 plastic nuts)
- loosen the mounting bolts for the master cylinder - to allow the push rod to be manipulated
- with a large flat bladed srewdriver gently prise off the circular bush holding the pushrod onto the pedal
- clean off the old "silicon" (I think) grease, mine was bone dry
- put real olde english general purpose grease on the pivot
- put all back, tighten up fixing bolts, replace trim
Not issues for last 8 months job done!!
Hope it helps.