Thanks; so, the first problem is almost solved, except that now
Feyncalc thinks that "Dimension -> D" is a Lorentz index; indeed,
I get structures like the following:
Overscript[\[Gamma], _]^b.Overscript[\[Gamma], _]^Dimension->D
The second problem didn't change at all; I get exactly the same error
Am I doing something wrong?
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