So yesterday a bit of luck in cave on the cleaven side of island smiled upon us, 2veins spawned! 2veins out of 18rocks.
Today one vein with shadow ore spawned.
Since it's been said, that these spawns weren't changed, I remember, there were THREE locations in Gra cave, and mostly 2-4veins were spawned.
*whines like a spoiled brat*That's just SO unfair!!!
Not to mention the difference between difficulty of gra jokers and bloody driders.