For the first time since October, I was able to take my wagon for a drive. We went for ice cream and discovered we had no face masks in the car, because why would October 2019 me need a face mask?
This started with a bad proportioning valve that is unobtainum anywhere. In the end, only one hardline remains of the original system (it runs under the engine, so I would need to pull that to replace it).
I also discovered the fuel system return line had been patch 4+ times (they overlap, so it is hard to tell). So I replaced most of that as well with new hardline.