P.S. Tanks that gem and double trinket for stamina in Cataclysm are bad. Go to tank spot and watch Lores Q&A videos as to find out why WoTLK tanks had to stack stamina due to WoTLK mechanics as opposed to why it is stupid to do now. With poor gear and gemming choices like that - I feel sorry for the healers that have to carry you, let alone take you with them just because you're the GM and also pretending to be female for loots.
Get the avoidance Macro. Mine is about 86% unbuffed. 102.4% is Unhittable. Also Mastery has no DR. Dodge and Parry need to have equal rating not %, unless your a Warrior were parry > dodge.
Heroic 5mans don't count Bert.