I recently purchased an AT Gold. Initially it worked great. About two weeks into it I noticed a consistent problem. I'd hit a target, usually in the 30s, and dig my plug. Nothing. I'd get back on the detector and now no signal over the open hole. I'd put the plug back in and go back over it with the detector. Nothing. Started out with a solid signal, I even move 45 degrees to narrow down the area, and then nothing. It's done this probably 10-15 times. I am ground balancing each hunt so I'm not sure what the problem is. Any help would be greatly appreciated.