@jackie_w: I don't want to ship a "ready-to-use" approach (i.e., a KoboRoot tarball), because I know random people will try it, and if it breaks, madness will ensue. So that was just enough information and background for adventurous people to DIY

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If you want to try it, I'll send you a link in a PM

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(I'd ideally liked to have at least ran a real run on my Forma manually first, but, of course, it's when you desperately want to reproduce the issue that it stubbornly refuses to happen ^^).