Just started working on Heroic Garrosh tonight, and after coming into the raid having done a fair bit of research, I had a question. The first set of adds that spawn during phase 1 are fine, they target myself (prot warrior) and are nuked. The second group of adds is the issue, sometimes. They seem to target people at random, including healers, no matter where I have the boss positioned.
Myself and the other tank are doing what we can to establish initial threat, and the people being targeted are not aoeing. Even while standing next to the group as they come in, they just seem to overlook me.
To get an idea of the positioning we use, it's essentially this here: http://www.youtube.com/watch?v=0agcik6ah2
We're at the first intermission, which we seem to have worked out, but the apparent randomness of the adds is really frustrating. What am I missing here aside from sucking and being months behind?