I recently got into a Heroic UB as a MT and instantly had problems with Aggro. the Party was; Druid heals, Rouge, Mage, DPS Warr and me tanking. We did 3 pulls and wiped or nearly wiped on 2/3 of them.
The pull(s) went like this: Mark 1st Kill/2nd Kill, Fairy fire skull, mangle, swipe, lacerate, and the other 2 mobs barely paused as they screamed past me straight for the healer. as the healer is getting punded I'm spaming everything I got and pounding growl to rip agro from him but it was never fast enough to save him.
Any Ideas? was I doing anything horibly wrong? I wasn't getting smashed by the blows or anything. I've OT'ed Kara and the like with no real problem but this was a total disaster.