Can you tell me the tension of the pads? How it will compare to originals. I think this headphone need super soft pads with memory foam if not then normal foam does just fine. All pads I have tested got elevated upper bass and elevated low middle if memory foam.
Edit. It seems 200 grid steel filter is slightly helping to get flat sound as possible. Maybe 0.5-1 dB and I managed to measure easily less than +5/-5 dB, I'm at now +4.7/-4.7 dB. Also the play dought seems to give different measurement every time. Need to squish pads hard before first use.
Treble is now more soft and not in ur face even it measure more flat. Also I did some more folio mod to the steel mesh. And with all my mods and China pads you lose 10-12 dB. You need strong amplifier after all of my modifications.
Ignore THD measurement it does not measure anything.