Thanks
@Archer and
@Canuck. I think you've probably correctly identified what i'm trying to describe ("backing up" and "backing off" respectively) , but then again i'm not convinced, as you both mention this happening only when fully wound. i am speaking about a 'back up' (perhaps 15-25°) of the crown every time i turn it. So as i'm winding (from any state of wound-down), every time i let go of the crown to reposition my fingers to rotate it another 180° or so, it 'backs up' a little. (or at least some do.... some don't) It doesn't make a 'click', so i suspect the click spring isn't very tight, and it winds back to whever the click tooth naturally 'rests'. Or something like that?
You're both saying it's not a 'problem' per se, so nothing to worry about... but i find it odd that i'm finding it on modern and vintage pieces, regardless of movement - and some (same calibre and era) movements don't show it at all. Something in each of my 321s (and 861s and 1861s) is different. And most imporantly, given it doens't make for a nice 'action', can it really not be adjusted/eliminated...?
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