Hi guys, I recently purchased a second-hand Quartz Seamaster (2265.80) which I am very happy with. I can't help but add a photo! I just wanted to ask a couple of questions about the watch. Firstly, how often should I have it serviced? Also, I've noticed that the bezel 'rocks' slightly when I press down on it at the 12 o'clock position and makes a slight clicking noise. Is this a cause for concern? Thanks! Matt