It was a video on youtube that inspired me doing the mod, it was some time ago so i dont recall the name of the channel. Though that "Bloxygen" rings a bell, so its probably the same guy.

I remember that Tanchjim Oxygen filters were used on the nozzles(and Y2 on the driver). With what im using, and the measurements i have available to me, i find my results very close to target.

Thanks for the reminder of "Bloxygen". Dont remember what he achieved, but will search youtube with that term, curios to compare.

Edit:

Searched around Akros channel, and yep, thats definitely the guy. Its these 2 videos

The mod - https://www.youtube.com/watch?v=EdFaGm13qaA

The measurements - https://youtu.be/VAiVek2h1rQ?t=1221

When i normalize my charts at 1KHz results are pretty close with what he got, almost the same. Though as i mentioned in one of the previous comments, with my blon sample(there can be some variation), 300 or 350 nozzle filter should bring it even closer and compensate for that around 1-2db difference in the 2-4KHz regions(this would also affect the dip at 6-7KHz, and i like it the way it is currently), and Y2(instead of the Y3 im using) on the driver for the 1db bass difference. Dont have them glued still as they hold pretty well only with the pins, so i might try this variant in the future.