No matter where you take it to get aligned, they probably wont be able to you get you more than 0.5 to 0.7 degrees of caster. When I had mine aligned after installing a SS 1.2, they were able to get the camber/toe within spec, but in doing so, I lost all my caster. I think the tech said that the stock spec for caster is 1.2-1.5 degrees, and the best he could get on mine with the lift was 0.6 degrees on either side.

That being said, like another guy had said in the other thread (there was duplicate thread here at one point), the caster setting will not cause abnormal tire wear. Caster has more to do with steering feel, and the tendency of the wheels/steering wheel to return to center after a turn. Picture a shopping cart's front wheels... they have about 45 degrees of caster... when you turn the cart, the wheels swing out to the side, but immediately return to a center because they are being "pulled" due to their attachment point ahead of the centerline of the wheel. The caster on your 'Runner serves the same purpose. If you're on the freeway and you jerk the wheel real quick to the right/left, you'll notice it wants to return to center on its own... the less caster you have, the slower it is to return to center.

Toe in/out will cause some nasty tire wear, as will positive/negative camber, so make sure they get those within spec in the meantime.

Also, I watched the guy do the alignment on my truck, and if I remember correctly there are cams on the upper/lower control arms that control all 3 settings, and that's it. I had mine aligned the day I got the wheels/tires put on, and within a week the camber was way out of spec due to the lift settling. I took it back and had it re-done, and now it seems to be fine.