Highly unlikely the clutch disc is bad. Maybe the wrong one and not thick enough. Definitely sounds like the pressure plate (pp) face is not putting enough pressure on the disc to have it sit against the flywheel. Maybe stuck on the shaft, bad springs, or wrong PP (not the right thickness).
Also, have you checked the tcase engagement? On another thread I was reading about this, they said the Luk kit said not to bust the strap on the the slave cylinder. Maybe not enough pressure to break the strap? Any of this sound familiar?