Right we encountered this last night. Found out that there will be one that gets off a cast every 15 seconds if you have 9 people. That assumes you have 6 players with 5s CDs on their interrupt and 3 per each droid so that the rotations would be ok.. SO this is obviously broken. Yes for crying out loud we know you have to interrupt calibrating shot and that they become immune if they stack 8. Yes we have downed this many a time, No this is not the same as pre-1.4 it is broken and if you can do hm keph right now your guild is godly.