I am hunting an old farm. As anyone that has hunted a site like this knows, it is littered with iron, and every kind of trash imaginable. I have pulled 3 Wheat's (54-44-42), and some clad to date. I run my AT Pro in Pro mode Custom, disc @ 35, and sensitivity @ 4-5 bars. While swing the coil I get TID #`s from 40 to 75, with low and mid tones. I will hear a high tone, but not necessarily get a high TID # to go with the tone. After I pinpoint the high tone, I can get the tone to repeat, and sometimes a high TID # to go with the high tone, but the high TID # usually won`t be displayed or repeat. Those were the readings I got when I found the Wheat`s. My question, Should I dig on a repeatable high tone, and not be concerned that I don`t always have a matching high TID # to go with the tone?