Right now you are a "case study", filed under case no.1, top filing cabinet, Title: Apparent Failure of Filaria, Subtitle: Lack of Soul-Stirring Effect.
This will be an on-going case, and is currently under investigation
As for bitterness......regretfully, I have not tried Chugoku Senkoh or Assamugo Senkoh, and I only had one sniff of Suriranka Senkoh.....but you can find the bitterness that I was referring to 15 minutes into AOMeg, 35 minutes into Dr. Hindi, immediately with Treasure Oud 95yr, it comes and goes with Hudhayl, early-on and extended to drydown in "heaps" with Oud Hud
. My Filaria bend has tons of bitterness, but it seems a little different with that species. I haven't examined the other oils in my collection under this light, so this short list is all I can come up with at the moment
Today I swiped my Filaria blend that I named Maroke Madness.
The oils used in this mix:
EO Maroke Sultan
FO Pa-Papua
EO Maroke Muah
EO Oud Royale 5
A lot of snappy bitterness, but a bit more cold and hard versus the bitterness in Hindi oils.