Having some threat issues - DK tank HM ICC25

[Catatomic]

I'm having a bit of threat issues, fairly well geared tanking 9/12 hm icc25 but on some fights threat just isn't nearly enough to hold off the mages/locks :/

Parse: http://www.worldoflogs.com/reports/rt-m7h6h1wmgsyeyl1n/details/27/

Armory: http://www.wowarmory.com/character-sheet.xml?r=Ner%27zhul&cn=Balkoth

I have a handful of other pieces I alternate between this is my character stats in the gear I was using exported from RAWR.

Character: Balkoth@US-Ner'zhul
Race: Troll

Miss: 9.22%
Dodge: 29.72%
Parry: 21.69%
Armor Damage Reduction: 68.02%
Magic Damage Reduction: 0.00%
Total Avoidance: 60.63%

Burst Time: 31.6 sec
Reaction Time: 5.9 sec
Health: 47126
Armor: 35369
Strength: 1723
Agility: 136
Stamina: 3891
Hit Rating: 314
Haste Rating: 0
Crit Rating: 104
Physical Crit: 12.63
Expertise: 16
Attack Power: 8313
Armor Penetration: 5.00%
Armor Penetration Rating: 0
DPS: 0

Rotation Time: 18.00 sec
Total Threat: 0
RS Limited: none
Blood: 0
Frost: 0
Unholy: 0
Death: 0
Runic Power: 0
Overall Points: 440742.3
Mitigation Points: 70173.8
Survival Points: 143026.2
Threat Points: 17020.8

Crit: 0.00
Defense: 545
Resilience: 15
Defense Rating: 595
Defense Rating needed: -44
Target Miss: 0.0%
Target Dodge: 2.5%
Target Parry: 10.0%
Threat: 17020.8
Overall: 440742.3

Modified Survival: 143026.2
Modified Mitigation: 280695.3
Modified Threat: 17020.8

I know the armor to damage reduction for it isn't 100% accurate at least not according to my in-game character sheet but its a an easy way to show overall stats.

If you need anymore information or anything just let me know, I'm pretty well versed in mechanics and never had any real issues with threat till now :/

[Timberton]

if you have 10-12k TPS (see it on Omen) unassisted by rogues/hunters, then you can't really squeeze out much more.
You will need trix, misdirects etc...in order to go beyond this. That's just how the raids are tuned, and it assumes there will be external threat generation working for you in a 25 man from the rogues/hunters.

Fake edit

Your rogues have been trixing each other a lot.
Across all tries, the druid tank has gotten 45 trix, you have gotten 5 (the amount of trix cast seems to be 253 across all tries).
2 of your 3 hunters are trading misdirects or are misdirecting on themselves (? huh). The 3'rd hunter is barely using his. I may not be reading the logs properly, but none of the DK's have Misdirection listed as a gained buff (if that's not how misdirects works or doesn't show on target buff, then ignore this, but do /slap Boac).

In any case, there's some fishy stuff going on in here

[Catatomic]

yeah, I was thinking it was something external or something like that; I pull average 10k tps without trix/misdirects but I'm not expertise capped so I might be able to pull out 12k if I was since it seams everytime I need to refresh blood plague PS gets parried or dodged.

[Timberton]

Your rogues/hunters need to be using their trix/misdirects on cooldown in that case.

Rogues with 2xT10 bonus already [should] have trix implemented in their rotation, they just need to target the tank instead of trading between them.
Hunters..donno', but if threat is a issue they should misdirect heavily too.

[Catatomic]

yeah, I'll mention it; its usually only the initial burst of all the procs and everything I have trouble with anything else not really.