I absolutey LOVE my MXT but i need advice. I have just recently tried using my gain setting at about +2. I get a lot of low hot rock signals. There is definetly more chatter but I pulled out a couple of deep bullets with low toned (hot rock or iron) signals. Now if a big item is deep it always beeps +89 - +94 Big item range even if it's iron (plow blade, horseshoe) I was just wondering if there's anything you can do to narrow things down to know whether you should dig or not. I've read the MXT Edge and I just don't understand all the technical stuff. That's why i got the MXT because there's not much to set you just pump and go. Thanks.