The weight looks good now, maybe add 50 grams. Just try and don't be afraid to use to much. Thick ropes can hold a lot of weight without breaking. The consistance of the rope looks real good, except the last part.
Slow a little bit down the speed of the "BOK" and go to 11 or 12 % instead of 10% with the thicker ropes. And see what happens. The unravel is because the strands are not turned enough.
Another way is to stop at 1 meter before the end with your early settings, wait a minute and slow the "BOK" and start again turning.