If memory serves, I completed this part of the quest with vette as an immortal specced Juggernaught tank, I jumped in and smacked Draagh (or however the hell you spell it) got as much agro as possible, with backhand, force scream, and crushing blow, and preceded to kite him while vette smashed the crap out of him with missiles and bullets. I would cycle my taunts, backhand and force scream crushing blow everytime i was close enough to hit him but most of the time i was kiting him around the room. If you happen to be a biochemist, it makes the fight a little easier if you have a reusable medpac near your level. If not then pick up some normal medpacs at the medical droid. The fight can last a while so you will use the medpac several times.