Mindblade Spectres and Ecto Drop Rate

me and a couple friends went in this with a homemade build, and got through the obsidian worm things and into the plains where a shitload of Mindblade Spectres can pop. (U kill a dream ride and 3 pop, then 6, then 9 for every rider = lots guys) Awhile back, a long time ago, these guys dropped ecto like no other, 10-15 ecto would drop/run. Now, we went in, killed 3 full groups (around 54 mindblades) and didn't get 1 ecto drop. Anyone try these recently? Cause that's gotta be REALLY REALLY bad luck to not get one.

I use to go there with a group of friends, they have all retired from UW completion. In those days (5-6 months ago) ecto would drop about 1 per a group of mindblades from the nightriders. I agree with alot of ectos, but probally not with 15.

PS: We use to use the old 55 monk with prot bond, and infinite spell breaker combo