10M HC Megaera - Need tips w/ logs

Hey guys

My guild has used about 85 wipes on Megaera, and we seem to fail alot on the 2nd arcane head..

I cant really find out whats going on, seeing as im tanking, but its usually adds not dying being the problem here..

http://www.worldoflogs.com/reports/rt-dt1a5ir5umugm95s/
http://www.worldoflogs.com/reports/rt-bx6di2t7bklimrhw/

We dont pop cd's in the beginning, but rather on 1st fire head + BL and cd's on 2nd fire head..
We've tried with BL on 2nd arcane head, but it seemed that 2nd fire head just overran us with adds + we got a 3rd breath.

Any tips on how we should do it?

Raid setup for next raid on Megaera will be:
Prot warr
Prot pala
Hpala
Rdruid
Dpriest
Fire mage
Ele shaman
Hunter
warlock
Rogue

Thx alot :)!