The problem is raid execution in general.
Theres a LOT of threads about so I'm not going to rehash everything. But for starters:
1) Phase one is lasting too long. Either repairs are going off or people are not picking up bombs. A fast phase one sets you up for an easier fight.
2) At the end of phase one try to transition with bellows operators dead or very low. Tanks need a LOT of love here since the damage on them can be extreme.
3) Your highest dps (fire mage) is 12th on the primal elementalists. People need to hit the right shit and the right time. That kind of parse just screams "padding scumbag". Hes really not helping make the kill happen. Same with bellows operators. 70k total is worth jack shit if you're doing a quarter of that on targets that matter.
4) After each elementalist you need to "clean up" firecallers / guards. On wipe 6 the tank died because he was tanking 4 guards. Thats too many (two too many imo!)
5) Primal elementalists are healing a TON
https://www.warcraftlogs.com/reports...ng&hostility=1 (for example) Offensive dispels from a priest or shammy are needed.
This fight is like a house of cards. It chains out of control if you don't do the little things right. People need to focus on executing all elements well.