Hello. I have been a lurker for several years now. I have been a die hard Dirk Pitt fan so inherently I have wanted a Doxa sub for a while. For my wife and I 's 12 year anniversary she bought me a 1200 T. What wife!! My question is I have never had an automatic watch until this one. I have to adjust the time by two minutes a week it seems. Is this usual. I know it's not a quarts. I was thinking once a month but once a week.