I thought there was a tank shortage...?

Okay, I know that people are almost always looking for a tank for a level 70 instance. Hell, there are a lot of people in between 60 and 70 that need a tank for the pre-70 instances, too.

Then why the hell can't my Bear Tank get a group for Mana Tombs or Auchenai Crypts? I know that people don't like the Auchindoun instances too much, but am I the only person who knows that the bosses in there still drop loot that can be very beneficial? I'd like to have the Idol of the Claw from Mana Tombs while finishing off my last few levels.

There are no alts in my guild, Order of the Oak, that are near my level save one paladin. Plus, PUGing is shoddy in the summer time with all the kids out of school. Will I be relegated to leveling up the rest of the way without hitting some of these instances? Will I have to struggle even harder to tank instances at 70 since no one wanted me to tank instances at 6X? Only time will tell.