Not really sure why you think you can't tank KZ, especially the first couple of bosses, with what you have. The only equipment pieces I see that I'd upgrade would be chestpiece and cloak - and the cloak just to get to Devilshark Cape and drop some Defense Rating for Dodge Rating. At minimum, pick up a +12 Agility to cloak, or +12 Dodge when 2.2 releases. I've been MTing our guild runs for a few months now with not much more in the way of gear than you have now, and my gems are a bit weaker. I'm now leading the weekday group runs while they look for a weekend replacement for me. You're more than able to function as an MT in there, it's just a matter of being aware of what you can do.
_________________
