Think outside the box. Use all your tools ie stims, stuns, the right companions. Swap out companions - I always figure on the tough class quests 1 death to figure stratagy. Fought 1 mob with a killer AOE - so I spent the time running around him, another with a killer personal aoe - went to a ranged companion while I ran around stunning an interuppting. Out side the box - trained on SOB back into friendly mobs who did the killing for me. Bounced another off a bridge to his death. Use companion to keep elite busy, kill any support troops. If you die before the main mob but kill the support when you rez then you only fight the main guy - the support stays dead. Maybe a quick repec if what you have isnt working. I have 3 50's and thats how I soloed the class quests.