Maybe its the fact that I lose RR when we get booted out of the BC?
In any case, I've been getting more and more-so pissed off, and beating up Tarus ain't helping anymore.

This asshole of a fucking boss won't die.
He simply won't, and I can't explain it.
We've done PLD, SAM, BRD, BLM, WHM, RDM on our first two tries.
Found PLD wasn't working so we changed it up.
NIN/WAR, SAM/NIN, BLM, BLM, RDM, NIN.
Our NIN gets wiped when we hit eles, so we go "hm?"
and then the SAM goes /DNC.
Works BEAUIFULLY! Well, that is until we hit 10%.
SAM dies, NIN gets wounded and dies.
BLMs go down and the last person standing Dia 2's the fucker.
After a bit of struggling, it goes down to 1% HP, and we leave crying.
1%... 1%.
Almost there... and yet nothing to show for it.
So, we go in the next day, one tag this time and get it down to 6%.
"f***" we say to ourselves, and try again tomorrow.
And now, we're at 0/8. Saving today's tag because we don't want to lose. We're all tired of losing, and I'm tired of being in danger of deleveling. So, I must ask the kitties here.
Have you done this assault before? And if so, what have you noticed about this fight?