Those chunks would bother me, I would want to know where they came from before I call it a day. If you looked at the plates be sure you have all the screws evenly tightened to get even pressure on the clutch. Sounds like the clutch hung up disengaged but those chunks make me think there must be a reason.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!