I have a 2006 Z06 with an issue. When I start driving the car after it sits for a day the clutch pedal does not come all the way to the top when it is released. It only comes up to the start of the free play and doesn't come back that last inch. It only comes up that last inch if I lift the pedal with my foot. After the car gets warmed up it is good for the rest of the day and comes all the way to the top on its own. Any suggestions? Is there a return spring broke or weak? Is there a lubrication point I am missing? Any help would be appreciated.