Reason I keep pushing back in your direction, is that I find it hard to believe this would occur on two straight wheels that were working before disassembly.
(Unless the second seller was hiding something...)
Still looking stuff up in the meantime...
=8-(
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5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life