Not sure if this thread should go here. Anyways, whenever I push on the clutch pedal on my '65 4 door, the pedal make a "clunk" type of noise at the bottom of travel. Sometimes it's when I'm still depressing the pedal, and other times it does it after the pedal is at the floor and stopped. Anyone have any idea what could be causing this? I've tried standing on my head and pushing the pedal by hand, but I'm not a contortionist.