Hello guys, the GMT hand loses 1/2 hour every hour. Another way of saying, I set it three hours ahead and in six hours the GMT hand and the hour hand lineup and then in another six hours the GMT hand is three hours behind.  ok so two part question boutht this Rolex GMT Master ll on another forum as a problem free well running watch.  1/. Is this something that could have happened  during shipping 2/   any one know what the problem is and how to fix it thx in advance for any info