Got mine a week ago...came across two issues: 1. The date wheel got stuck one night that I had to manually wound it forward; 2. It just gained over a minute last night and I have no ideas why as it used to kept -1/s over the past week? Fingers crossed and hope that everything will be fine.
Is it being kept fully would when you wear it? ie. before you put it on you wind it 40 times then set it rather than just giving it a swirl before putting it on? Gaining a minute overnight is quite a lot more than I'd expect, if there are issues though Omega will handle it under warranty.
I wore it the whole week and I have many watches that never had these issues..I think mine is a NOS and could be on-off for display for years.
They're not an unreliable watch, I guess keep wearing it for a few days and see if it happens today or if there are any other irregularities and if so warranty it. I love the feel of these on the wrist btw, its so much less bulky than it looks.
Tried the isofance but it was just either too tight or loose so I changed it to an aftermarket rubber.
This is one of my favorite watches. You can take your watch into an Omega Boutique and they will check it out for you.
It seems to start stabilizing.. I reset it on 18/11 and in the following days: Daily spot check with www.time.is 18/11 - 19/11 -5/s 20/11 -5/s 21/11 -8/s 22/11 -6/s 23/11 -6/s 24/11 -5/s 25/11 -6/s 26/11 -5/s 27/11 -6/s 28/11 -6/s 29/11 -6/s 30/11 -7/s