Do you know the cause of wear. I have two trays. One functions fine and the other has lost the rubber twice. The one that works ok has the rail that runs the length able to free float, even though it looks like it should be tightened. The one that wears has that adjustment locked tight. There is about 1/4" of play. Does anyone know if this should be free floating or locked and the proper method to adjust. Don't want to replace the rollers only to have them wear out.
Mike