I have not been hunting since this is my off season. After a 2 inch rain I thought maybe I could get out again and dig. I was going over the settings and thought I might try ferrous again. My question is if I use say 4 tone Ferrous and I favor 4 tone over Multi. I set to Ferrous. If my discrimination screen is set to 7- 25 and I receive a 6-30 signal would I get a response?