FYI: I have it on good authority that the D'Addario NYLTECH strings are in-fact made using a formula under license from Aquila to D'Addario.
They are more similar to the original 'Nylgut' strings from 5 yrs ago, than the 'New Nylgut', 'SuperNylgut' or LAVA strings.
In my experience, Aquila NYLGUT varieties of strings and the D'Addario NYLTECH strings, all need about 20 hrs of play time before the tone and tension will reach the sweet spot. This means like 1 hr of playtime per day for 2 weeks.
This comes from hands-on testing over 100 different sets of strings in the past 5 yrs. if you put them on and think that
'THIS' is 'the sound' and 'the feel' after 5 mins or even 2 days, I need to inform you that this is a mistaken conclusion and that the strings all settle much further out in time than the first 1-2 days of playing.
Stretching them by hand does NOT fix the tone, and I advise AGAINST doing this.
IMHO, The best way to actively force the string to settle to proper pitch and tension is BY PLAYING, vigorously for at least 10 hours, and retuning as needed during that time.
This is what has worked for me, however YMMV.