GMT (1675) Two Technical Questions

[StanGMT]

Hi,

Are there any Rolex technicians out there who can advise me, please?

My GMT was recently serviced and you know what it's like - when you get your watch back from servicing you really examine it for defects or anything that needs attention. Although my watch seems to be working fine there are two things I've noticed that I don't know whether to send it back for attention:

1. As you will be aware, adjustment of the second hand is achieved by applying a gentle reverse pressure on the crown (when it is pulled-out to the hands-adjust position). This stops the second hand until the correct second-point is reached. Releasing the crown then allows the second hand to move again. What I am finding since servicing is that the usual gentle reverse pressure on the crown doesn't stop the second hand. It is really difficult to get it to stop at all and that is only after carefully 'teasing' the crown, virtually to the point of winding the hands backwards, in order to stop the second hand. Sometimes I do reach the point of reverse-winding the hands and the second still doesn't stop. Any idea what is going on here and what should I do about it?

2. The date change occurs at 2-3 minutes before midnight. Nothing much wrong with that, but I've just noticed that, at the instant the date 'clicks' over, the red 24 hour hand jumps very, very, slightly clockwise. It is as if the release of sprung energy that moves the date ring is somehow linked to the 24 hour hand movement (which seems logical). This movement of the 24 hour hand really is only very tiny and it might always have been there - it's just that I've only noticed it now following this service. My question here is: Is this slight movement of the 24 hour hand when the date changes normal, or is it some sign of old age with my watch, that I need to attend to?

Any information and/or advice on this would be much appreciated.

Stan.