I've learned not to ignore the real faint high pitched 46 Id's that sometimes bounce into -8. Everytime I've digged a real faint 46 so far it has been an interesting, deep non-ferrous target. A brass button, mercury dime and what seems to be a round piece of lead with holes in it have been 46 targets I've dug. It seems as though instead of the target ID being lower than it should, it ups it to 46. I'm using the 9" 3khz coil Anyone else notice this?