doh.... the missing flail head is the fire one Sephiroth!
I'm not sure which location belongs to which specific flailhead, but it's either in one of the statues in the Golem room, on the evil fighter that attacks you in one of the rooms, or in the room near the forge
------------------
Melusine, Archbabe of the Order of the Holy Flame and the Laughing Hyenas, &
Official Entertainer Elf of the BG2 Bar
Your voice is ambrosia