Bo, looking at the logs, I think you have 2 challenges but your main is DPS, the ranged dps should be pulling 12k-15k preferably closer to 15k otherwise you will always have to down that 4th adherent dealing with a ton of adds and you will bang your head on P2 wall of only getting him to 10% and wiping a lot because healer mana runs out before the kill. Add control is also an issue it looks like, assuming you get a good hunter spec'd into snare traps they adds will keep killing your raid with corruption stacks. The benchmark to win this fight is getting into P2 without having to kill the 4th adherent and no one having over 25 stacks of corruption, if you can't make that happen it will be a 17+ attempt wipefest which Jager had back in the day. As an example I had Whateley do a simple spec switch which took him out of having to shadowfury breakout the worships and he added 2k more dps to the fight pushing him from 13k to 15k and we won.
You might consider again clearing some BWD content including Maloriak and Atramedes for additional gear upgrades as the roster reg flushes out.
Here was the basic outline of the fight execution for Jagger:
1 - All stack 3 yds behind Chogall, YJ lays freeze trap on CDs, worships are trapped, or feared and dispelled, if you have a warrior thundershock works too
2 - adherent comes out, MD to adherent tank, YJ, moonkin, sagenn focus adherent. Adherent Tank gets 1st interrupt and sgaenn gets 2nd interrupt on adherent aoe cast.
3. YJ lays frost trap at 10yds from steps at center point and staggers explosive trap, then lays snake trap 10-15yds back from frost, moonkin drops mushrooms on frost trap, rest of dps stays on Cho
4. Adherent 1 & 2 only YJ and moonkin stay back and wait for add spawn to dps them down, first trap snares for 4s..10yds later snake trap snares another 4s (all adds should be dead unless RNG worship hits one of us)
5. Adherent 3 - Sagenn joins in with mind sear aoe to assist downing the larger grp faster
6. If adherent 4 needs to be dealt with Whateley adds to the compliment of other 3 for last set to aoe down them quickly with his felguard
Moonkin and Yj stagger (Yj closest to spawn pt.) appropriately for blood adds focus and moonkin has worship break on YJ, to ensure traps go off.
P2 -Chogall backed to a wall, 1st tentacle set down cast hero use pots, switch to tentacles on spawn, Sagenn blows divine hymn at 10% to assist healers...interupts on tentacles if you have them greatly reduces dmg.
Being a hunter is hard....