Ya... your gemming needs SERIOUS work.
Regem EVERYTHING to +30 stam except put a +10def/+15stam gem in your helm and a +10agi/+15stam gem in your belt.
Shoulders - put on the +30stam/+15resil shoulder enchant from PvP (10k honor at the Stormwind honor vendors)
Cloak - Change this enchant to +225 armor
Boots - Change this to Tuskarr's Vitality
Gloves - what the previous poster said, +18 stam or +240 armor
Your spec could also use some work.
Take at look at the guide in my sig, read it and if you have any more questions I'd be more than happy to answer them.
Edit: Also agi/stam is a red/blu hybrid, defense is yellow/blue hybrid and the DRs on defense at your level are not very sharp at all, get into the 600s then we'll talk. Agi also has DRs so you're not really escaping anything.
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