16600 helium escape value position

[fransking]

Hi there,

Is there such a thing as a 'correct' position for the helium escape valve on a 16600 sea dweller? A year ago my U series SD came back from its third full service and they had replaced the valve.

The old valve (if I am remembering correctly) had a more polished look to it and was slightly recessed into the case. The new one has a darker matt appearance and was flush at the bottom but stuck out a a little at the top because of how the case angles in towards the bezel.

This bugged me for a while but after a lot of googling I managed to find a few examples that looked similar - i.e. not quite flush with the case.

About a month ago because the watch was gaining a little time and because it was under its service guarantee I took it into an AD to have it sent back to Rolex once more. I also asked them to take a look at the valve.

I got the watch back this week and now the valve is fully recessed into the case to the point that it again doesn't look 'normal'.

Any idea what Rolex would have done? Do they have long and short valves and fit depending on customer preference? Seems unlikely right?

Thanks,

Frans