Hello all, I am new to this hobby and eager to start! I recently purchased a used Whites Classic IDX and I am not sure that the metal identifier function is working properly. It seems to be stuck on iron or silver. I tested it with pre war wheat pennies and gold jewlery and it still says iron. The all metal switch was broken so it was removed could this be a possible issue for it not functioning? Any help or insight into the problem would be much appreciated. Thanks!