I don’t know about that, SingaporeMarc may have the answer.
I think the reason why sizing the WW.TC bracelet (and possibly your 4940 if it’s the same), can be such a challenge is the link sizes and how deceptive the wearing difference can be changing either one. For example, the large link is within a whisker of 11mm long and the small link is 8mm long. That’s why I refer to them as small rather than a half link cuz they’re closer 3/4 than a half. My bracelet already has two small links fitted, so why not just remove one of them if it’s too loose? That takes out 8mm (too tight) but If I remove a large link at 11mm (way too tight) and replace with another small link, I reduce by 3mm. Those dimensions are significant and unfortunately, can make the difference between wearable or not.