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[T2Steve]

I did a google search for the R3G3 location and it appears that one side of it (the left side) connects to a few points (I'm guessing ground) with a large Via further to the left sitting around the tattoo for the upper left corner of the number 3. Following the trace on the opposite side leads to a via immediately to the left of R3G4 text tattooed on the board. I'd try hitting those two points.