Ground balance in this area is normally 66 or so on the equinox, I have not tried tracking but will next time I go. Don't think I'm having that much problem with wrap around it does false a lot but that seems to be just iron falsing, once gain is dropped to around 16/15 or below the -6 to -9 readings will drop off some. What I was concerned about is if I keep the gain up and all metal off so I don't hear those negative readings and go over a non ferr target will the ground noise I know is there cause a target to be undetected?