The first boss also sits in a little dip in the floor. When you get to his area, stop your casters about 30 yards back, put your tank on the edge of the dip about 3 paces back, and then pull him with your tank. He has a huge hit box, so he'll stay down in the dip and the bombs will rarely hit your tank. You'll still get a few spikes, but you can avoid the vast majority of them with this method. (shrug worked for me)

As far as the final boss, you get a break between the first 2 waves (don't keep moving forward down the pathway), and they've also changed it a bit so that if you die, the wave you were on will stay just a little further down the hall and you can continue thereafter. That being said, make sure your tank is out ahead of the rest of your group and pulling the mobs. The important thing to know here is to just slow down. There's no reason to rush through, and you should not kill the last mob of the set until you've had some time to recover mana and are ready to move on to the next. Just keep the last one CC'd with sheep or fear and wait a little while.

What I normally do is position my guys just shy of the archway leading out of the 2nd bosses room and into the final bosses room. Move my tank into the archway and pull the first wave. I have CC, so I assign targets as they approach, sheep, and start killing. After the first 2/3 mobs in the first wave are dead, I wait a minute or so to get some mana, then kill the last mob. With my tank still out in front, i tag and burn the 2nd wave. Finally, I repeat the process for the wave 3/3 and DO NOT MOVE any further forward. After the last is dead, i drink / eat then repeat the process inching forward until I get to the spawn wave.

Now, I've not successfully downed Panth, but I've gotten to him without a problem. I've been having problems with him mind controlling my priest / warlock and hitting a mass fear causing me to become overrun with his nether ghosts. I think my best was having him to 10%. However, this instance has shown me that hitting 70 with my 2 mages is not enough to start insta-gibbing instances. I need to go back and finish up some more quests and farm a few of the other instances to better align them with the gear check that this and other TK instances seem to be.

Max