I went to a metal detecting dealer over the week end. I come home with another compadre. My wife said what is that one for. I will take back to the Philippines with me. I think that is a good answer. I will play with it to make sure it is OK. Than send it in to get adjusted real good before we go back. I noticed the disc knob is off a little compared to my other one. Im sure it can be readjusted & tuned up. Nickles go out just above iron. I know that aint right. It is working good if you don't look at the knob...KEN