I own a SKX007 for about 2 years. It's always been slow, about 20 seconds or so, so about a month ago I opened it up and adjusted the speed a bit. When tested, it was about 14 seconds fast. Since then, the watch has been slowing down so now, its only 2 seconds fast. What would be causing this?. I'm worried it will get back to being slow.
Thanks for reading