I popped in here to ask if anyone here had this problem and how to fix it. I have an older Seiko automatic (self winding) watch and the last few days it has been running fast (gaining several seconds a minute or about 5 minutes an hour).
Well I thought I'd do a quick bit of googling first and low and behold I found a solution ... one that was simple enough I figured I'd just post the answer to my own question here just in case anyone else here has had this problem.
This watch is one of the watches I got when my dad passed away back in June (the other is my grandfather's early '60s Rolex Oyster Stainless that isn't running at all so I need to eventually take it to a shop). I remember my dad tossing this watch into a drawer back in the '90s complaining that it was running fast but he didn't want to spend the cash to take it to a watchsmith. Too bad all he had to do was smack it (if I had a nickle for every time he smacked a non working appliance or TV

).