After puttering about in the garage yesterday I noticed my 6498 handwinder (Aviation) is running an hour fast over a 12 hour period. I can't recall doing anything I hadn't done before- it's my daily wearer. The warranty is long over, so I'm wondering if anyone can help me out? Does it need to be regulated? I'm currently letting it run down and then wind her up again to see if there are any changes. Any thoughts would be appreciated. Thanks in advance.