I think using "in fact" there is ok, I didn't have any trouble understanding it. "Actually" might have worked as well? And the part that follows, "with the grou

I think using "in fact" there is ok, I didn't have any trouble understanding it. "Actually" might have worked as well? And the part that follows, "with the grounding screw pulled out sufficiently far" probably also includes "the grounding screw missing completely".