Do you have a link to purchase those Knowles filters?
SoundLink on AliX- this one with the SS ring (you’ll pop the screens out of the ring)
Just found this amazing item on AliExpress. Check it out! $2.35 19% Off | 2PCS Balanced Armature Damping Damper Plugs filters Knowles Acoustic Dampers for Shure Se215 se315 se425 se535 Se846 TF10 LM5144
https://a.aliexpress.com/_m05BaDy
OR without the SS ring:
Just found this amazing item on AliExpress. Check it out! $3.00 19% Off | 2PCS Screen 1.78mm Knowles Acoustic Damper Damping Filter Plug
https://a.aliexpress.com/_mNgjZL4
Make sure to get at least 2 pairs of each color you’re interested in trying in case you damage or lose one! I’ve settled on green but the reds are also fun to try, haven’t tried the higher resistance than red.
Do this on a large table top because the buggers like to jump into oblivion as soon as you look at them! And turn off ceiling fans!
Use a blunted toothpick to widen the iem end of the filter tube and tease out the existing screen, then use the toothpick to place the new damper in.
For reference (I think) Shure put a brown damper screen in the white tube, white screens in the red and blue tubes and a red screen in the black tubes.
If you have 535s get a pair of the brown dampers with the SS ring (my first link) because they transform an otherwise dead sounding iem. Along with some eq from the TW2s they make rock music great when I go running with them!
There are great threads on head-fi for both iems filter mods and that’s what I followed.
Happy experimenting