So, I called frequent MacTech contributor Steve Brecher, who worked a lot in assembly.
https://en.wikipedia.org/wiki/Steve_Brecher
I read him the hex *over the phone* and he had the patch in 15 minutes. (This is my bar for God-tier assembly.)
There were some wrinkles I hadn't considered at first, so I went over to his place to hammer out solutions for the gotchas I was running into.
As I was pulling up, one of my favorite songs played. (Hair disco!)
https://www.youtube.com/watch?v=PGNiXGX2nLU
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