I was in a plowed field and got a reading of 50 which usually signals a flat button. When I dug the hole I checked and no signal, must be in the pile. Nope, pin pointer found nothing. Ran the T2 over the pile and got another 50 reading and it was saying 7 inches. This went on 3 more times. I covered the hole(s) and moved on. Very strange. Don't know if anyone else has had this happen?