回答“Out of balance during spin cycle?”To whom it may concern: Samsung Model#WF337AAG/XAA Vibration of drum just over slow rpm. The rear balancing ring has gone bad internally. The fluid and/or whatever is inside the ring has turned to a harder chunky material. It still moves around but very slowly and not smoothly. I have replaced the rear balancing ring and my machine is now smooth. I hope this helps.