During transport an IKEA Lack table collided with the arm and when set up it had excessive play around the bearing/mounting point, it kind of floated about. We all hoped something had just popped out and that no real damage had been done. Sounds like the bearing had been dislodged and just needed re-seating, which was good to hear.
Turntables are the worst thing to transport, you can never be over cautious when packing them.