Rolex 16613LV Crown Pos. '1' Free-Winding

[Chewbacca]

hello members,

got an issue with my 16613LV.

just unscrewed the crown to pos. 1 (crown out) and after winding about 10 rotations, it went freespin on me.

re-screwed. unscrewed back to pos. 1 and wound properly.

tried again to see if i could repeat the original issue, and it went free again.

i think it could be a mainspring issue but the watch only has about 2yrs wrist use since new, but has many restarts as i rotate often. its a Z 2006 series.

gonna take it to my ad this wknd for a quick assessment but any ideas?

thanks in advance.