I didn’t think it was possible for someone to come into this thread and look as foolish if not more so than the OP… Good lord.
But I thought you were already playing perfectly? I’ll point out again, that you’re ignoring the TG and DP spam on Sikran, but whatever. Also, you’re casting Spirit Bomb way too much. When talented into Focused Cleave, which you were, you only want to cast Spirt Bomb once after Meta or Fel Dev to proc the Demonsurges.
If you’ve actually improved your DPS, I’m happy for you. I bet you’ll find holding aggro is better now that you are doing the DPS closer to your ilvl then 610ish.
78 and just switched to Ven dont quote me on it but i think your dps helps keep aggro as well i have no problem holding it
Game does not start till m+ 12.
So I came back to this thread to check: did our sigil of flame threat generation problem get fixed yet?
Well glad we got to the bottom of vdh threat gen. Nice work dh community!!
OP had errors in their threat generation pointed out to them and was also told the truth about bursting DPS, which is that some of them will just take aggro regardless if they decide to completely unload before the tank has had a chance to establish any threat, and that’s true for every tank spec.
Some people got snarky, OP got defensive and hostile towards any and all feedback. 
Par for the course 
He’s a little grumpy lately