I had read on one of the other forums about someone getting better depth in iffy ground by running their gb slightly negative. So, having some moderately bad ground around the back of our house I decided to try and ground balance My Tesoro Tejon slightly negative, just to see if I could pick up the flat button I buried last year at 8", for a test (button slightly smaller than a dime and made of tin). Well, I was shocked because not only could I pick it up as a good target, but when I flipped over disc 2, set slightly above foil, I was still getting a good signal. The Tejon is not supposed to be able to handle iffy ground and here it was doing better than most of the machines I've tried in my backyard. Makes me wonder if setting ground balance isn't quite the straight forward thing I've always been led to believe it is. Any comments or experience on playing with ground balance based on ground conditions?