Hi guys

My Omega SMP 25318000 has a odd issue, When the crown is unscrewed the date will change up one before the crown is fully unscrewed, I spoke to my watch maker and he was baffled as to why its doing this, The watch works perfectly otherwise just this strange issue.
When the crown is unscrewed fully it should go to the manual winding option first then date change then hand change.

Any suggestions??

 

First thing I would check is to make sure the stem is cut to the correct length...

 

Yes this was checked and replaced with the same result.