Hi JJ,
very well done, as usual. Thanks.
Though it's been a very long time since I did anything age of sail in the 1:1200 or larger, I well remember how ridiculously time consuming and fiddly ships were to rig properly. One thing I did discover, to my chagrin, was that cotton thread tended to stretch and go a bit saggy over time.
Looking at your video I think you are using cotton thread so, on a 'constructive criticism' note, I would suggest that you move from natural fibre to something purely man made (nylon) and less responsive to humidity - which is what I put the stretch down to. It's pretty cheap and available in various thicknesses on ebay.
Of course, the thread you are using might be nylon, but nylon generally looks 'smoother'.
Best,
James