Originally Posted by lc_sar
Hmmm, I don't think I have it quite right after all. I took it out for a test ride, and there is a slight click when I brake; it appears to happen approx. once per tire rotation. Also, it looks like the right arm moves more than the left arm when the brake is applied (when it is released, the right arm spring back more than the left arm). I think I'm about as far in as I can be with the barrel adjuster.
Could this be a tire problem? ie, when putting the tire back on, is it possible for it to be shifted more to one side than the other, or is this more likely to still be a brake issue? Thanks!

You can "eyeball" the tire/wheel alignment. Just make sure the rim is equidistant from both fork legs. (or chainstays/seatstays if the rear)
You can probably just manually rotate the brake assembly to center it.