Did you guys notice that there is something wrong with this combo in t6? I mean, the damage seems to be locked to 2,5kdmg, I am using full t6 set along with 2x RF rings and the damage is really low, usually between 800 (yes 800 for a two step combo) - 2500 (though it happened to me only once and as a crit). The thing is, the Hellfire Breath deals much more damage or any other combo. I manage to deal almost every time over 4k dmg in t5, but in t6 works just bad.
I am using Avatar spec so the damage should be good but is not, and 1840 fire damage.