I'm addressing an item on our house's inspection report where a GFCI outlet had been ungrounded. I turned off power at the breaker box, popped the outlet cover off and found the ground wire neatly tucked into the corner. When I pulled it out, I saw paint covering the ground as shown below:
From what I've researched so far, I should not attach the ground as-is, since the paint interferes with the metal-to-metal contact. Would using a chemical stripper be the best way to remove the paint? If not, what should I use?