Mark,
These quartz's commonly get a bit of dirt or debris in the drivetrain. It can result in erratic running. Sometimes a shake will fix it, but it is usually temporary, and you may find that it starts to run slow again.
Keep an eye on it - you have have just got lucky!

Stewart

: ...i open it,to see wich screw i have to turn but i didnt find the
: right one.so i close the watch again and after this... it runs
: correct!
: Crazy or not?Can anyone explain it?

: wondering greetings and thx 2 StewartM 4 help!
: Mike