Can someone tell me what is happening, I've tanked a few HC's now to get my skills up and get some better gear, I am still waiting for the essence to drop in AN HC. So far in every single HC I tank the healer (and some are Ulduar 25 healers) say I drain too quick.
Blondedeath armoury link for you to have a look at. Any help and advice will be greatly appreciated.

