So I was in a soccer field with my mxt. I'm very professional, cut plugs and never ruin the area. I get a hit on an object that says 3-4 inches. Always a Lie...lol.
I shake the plug, run it over the coil, nothin. Go back over the hole its still hittin 3 inches. Scoop, scoop, beep, beep, finally find a round clump of dirt. Shake some dirt and see a coin that looks foriegn.
clean it off and yeah!!