I'd just like to make a quick comment about the leaf pack. What a difference! I can't say for sure whether the improvement is due to smoothing out the leaves, installing the plastic liner, or both, but there is a marked improvement.
Also, to anyone with leaf springs: remember to grease the shackle pins! Judging by the condition of the pins I pulled I would say the school district didn't do this regularly. They were seriously worn and sloppy.
Oh, and the brakes are silent and working perfectly. That was the whole point of this job, after all!