Scott: That's a great website! I've bookmarked it for future reference.
I put the seal kit in, replaced the distribution block with an old crusty one, bled the brakes and everything seems okay. That caliper had been sitting for a couple years since it was rebuilt and it looks like a sloppy rebuild (except for the SS sleeves) so maybe that was the problem.
I drove the car a few miles last night! That's the first real drive in this car since I've owned it (almost 26 years).