After I drive my car for a while (tremec 3650), I noticed that the clutch pedal gets a little notchy/sticky when I release the clutch pedal. It's very sporadic, and when I put the clutch in neutral, it seems to go away. Could this problem be at all related to the throw-out bearing? I've never lubricated the t/o bearing like many others have, and I do get t/o bearing whine when I'm in neutral with the clutch pedal out. My car has 19K miles.