If you're using a plastic beater you can get a kick drum patch like this
I did this and immediately noticed a difference. I also built a tennis ball riser and whilst its your upstairs neighbour complaining, something that would definitely reduce the vibrations they may also be hearing.
Try the Evans patch that I’ve used.
https://www.amazon.com/Evans-Double-Pedal-Patch-Black/dp/B0002D0DWK?th=1&psc=1
If had to adjust its placement once already, and it’s left no noticeable residue behind nor lost its ability stick in place.
You can also slap a patch on there to protect it https://www.amazon.com/Evans-Double-Pedal-Patch-Black/dp/B0002D0DWK
For double kick it fits really snug on the KD-10 https://imgur.com/a/fEU4dHw
Sorry for offtopic, can't comment on technique, I'm not experienced enough.
I got my TD17KVX from second hand and it had nasty looking bass drum trigger. Previous owner didn't keep it good looking.
First: use plastic side of the pedal.
Second: buy a protective patch (I have one like this: https://www.amazon.com/Evans-Double-Pedal-Patch-Black/dp/B0002D0DWK, maybe different one, but same manufacturer).
Both real and electronic drums can use such patches.
Something like this Evans EQ Double Pedal Patch, Black Nylon,EQPB2 https://smile.amazon.com/dp/B0002D0DWK/ref=cm_sw_r_cp_api_i_T2NJPXNHVPW91Z0MEN8T
Evans EQ Double Pedal Patch, Black Nylon,EQPB2 https://www.amazon.com/dp/B0002D0DWK/ref=cm_sw_r_cp_api_glc_fabc_CYraGbDPYBA8R
Huge nono. Felt will rip the shit out of mesh. Get a cheap double bass kick patch on amazon and you will be fine. My iron cobras came with plastic and felt on the other side which was convenient.
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The plastic side of the beater that came with my DW pedal. Regardless of what beater you are using, make sure you are using a kick drum patch on the mesh head. I cannot stress that enough; it protects the mesh head and will prolong it's life, and it costs you all of like $3 per patch.
That said, you could try the KAT Silent Strike. A lot of people like it.