The pilot bearing, where the tip of the input shaft rides in end of the crankshaft, may be starting to drag. I had one completely freeze up one time such that the clutch pedal felt fine and the clutch was disengaging perfectly fine. But I could press the pedal to the floor and the car would keep on pulling ahead. I had a mechanic fix it and he said he had a heck of a time extracting the input shaft from bearing. The bearing completely froze and the input shaft had spun within the inner bearing race until it was so galled it was kinda like welded together. You don’t want that.