I understand there are some bugs for Twintania, and today practically speaking it really did seem like the T5 changes in 1.6 made it harder. My raid group has been farming her since november, so we have like 4 allagan weapons and we had a difficult time bringing the big snake fully down before Twintania came down with just 2 bar limit break.
We ended up just going three bar limit break and that ultimately fixed it.
On top of that, for the other healers who know Twintania inside out, did it seem like she was auto attacking more than usual? or doing it at more dangerous times? My MT (who is ilvl92 btw) was dropping much lower than usual.
Was just wondering if anybody else who has done Twintania since 1.6 came out noticed this as well.