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  • a couple of weeks ago I noticed my Longines was nearly 5 minutes behind, I put it forward and I've been keeping an eye on it, seems to lose a couple of minutes a week. I set it to the exact second yesterday morning and this morning it seems to have lost 5 seconds which is fine, not sure how it got so far behind before. Going to keep checking it.

  • Have you changed how you were leaving it overnight? Often a big rate difference between face up and crown up.

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