One possible snafu - I noticed after upgrading a unit that I was told I needed to repair the upgraded component. Unfortunately, I had not yet researched repair!
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My SEIV code:SEIV code: L+++GdY$!-Fr-C-SdT++SfTCP+A---M-MP!R!-Pw++Fq++Nd*Rp-G++AuMm++