I am honestly working hard to be a better tank as well as trying out the duel-spec option with a Ret talent spec. I leveled Xan as a Prot pally from level one I had that goal in mind. I worked hard on him but didn't understand the basics of what was needed as a tank. But in time and through a lot of questions asked I slowly began to learn the ropes. But stubbornly I refused to study the websites and such. So it was still an uphill battle.
Now with the help of podcasts and my own research I am slowly working towards being the tank that I want to be.
Now to the point of my story:
On EARLY Saturday morning May 9th I was doing my dailies and I picked up the daily dungeon quests. The heroic and the regular daily dungeon quests were both in Halls of Lightning. I KNEW that I didn't have the defense to live through a heroic run, so I put my name down on the LFG for a regular run.
I was contacted by members of the Trollbane guild known as All the Way to Uranus (Formerly of Apocalypse) They were looking for a tank on Heroic. I informed the person asking that I may be a little undergeared with a defense of about 520. They encouraged me to join them and said that their healer and their DPS was epic and that if I could hold them with the defense potions they gave me we would be fine.
I COULDN'T BELEIVE IT! A HEROIC INSTANCE RUN! I was all game!
We actually did very well. I accidentally pulled a couple times and ended up wiping. I apologized to the group and they just cheered me on, let me know some of the pulls were not my fault etc...
After an hour or so we cleared Heroic Halls of Lightning and not only that I was given the opportunity to get all the Achievements in HHoL as well.

Now THAT is the way a PUG is supposed to go. Thanks again to the members of All the Way to Uranus : Kratos, Mooniez, Pascha, & Ferris.