I'm hearing from more than one person that Eo'euvhi don't drop organs at all. Aw'euvhi or nothing.
Can anyone confirm? I'm at 55 kills on Eo'euvhi and have never seen an organ. Linkmates have been killing them as well, but I don't know if anyone has gotten an organ from the Eo type yet.
Guess we band together and kill the Aw's as a group. Hello hours of camping to get like 25 organs. /sigh
Best place to farm these things is in The Garden of Ru'Hmet because the VT++ ones have much much better drop rate than the DC ones found in Grand Palace of Hu'zxoi. I usually go to south side of F-12 block where there's 2 on each side guarded by a fast spinning jar and a spider. RDM/BLM can grav, bind, nuke, sleep at will so soloing is easily possible. My first organ dropped on the 10th one and currently working on the next one. Bringing another mage friend will definitely speed things up.
I still haven't found a good way to get past the fast spinning jar in those rooms so i usually just agro and pull them back, sleep, relog and u'll have about 1 min to pull before it repops. I recommend pulling the opened Euvhi first since the closed ones wander and can be pulled safely without agro'ing jars.
GL farming.
Update: I am now 5/51 including 5 HQ Euvhi Organs, about 13 elemental cluster and 7 Luminian Tissue.