I am new at metal detecting, just a few hours of hands on a V3i I just purchase. I am having trouble ground balancing it. I have it set to C&J, factory settings, 10 DD coil, and I can not get it to balance or get it to give me a good reading on anything. Can anyone tell me what I am doing wrong. I read the book a few times and watch all the videos on You Tube. Any help would be appreciated.