I love metal detecting. I know there is a lot to learn to be good at it. What exactly does overload signal do to the mxt? Also, I found a spot where an old homesite was burned by vfd. Old timers tell me they know for a fact a couple of bags of indian head pennys and silver dollars fell between the walls and were never recovered. Is it possiable to get an overload signal from a lot of coins in one spot? I am new at this and would appriciate your experiance, advice, thoughts as digging up nail, iron, and aluminum gets frustrating.{not enough to stop}