NFranco,
Please feel the clutch pedal with your hand, assess the feel at the top 0-2" of pedal travel.
q. Does it feel sloppy and the begining creation of pressure is delayed?
q. In your 1st and 2nd gear engagements (begining of forward movement) does the truck start to move as soon as the pedal no longer touches the carpet?
Observe pedal to master cylinder junction, specifically the white pin, any issues, looseness?
Any noises or other possibly related observations?