I have a question about the explorer xs pin pointing mode. When I switch to pin point mode I have no problems pinpointing, but I always have to switch to the detecting mode right after or the detector starts making terrible noises after a few seconds of none motion. I'm used to the soveregn that I leave in the pin point mode to verify if my targer is still in the plug. I guess my question is, Is there a way to stay in the pin point mode to accompolish this, or should I purchase a pin pointing tool?