Uneven wear or breaking of the push rod maybe sign the pedal arm is bent/twisted.
OE pedal is "weak" and easier to bend/twist for any problems on trans end or the clutch itself.
Many clutch arm in rear gets bent too and clutch hyrdo has a harder time to work.
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
The Ogre's Fiero Cave