every place i've hunted for coins has been super trashy. i stopped at the state fairgrounds in jackson yesterday for a bit and searched along the walkways into the fairground. my 1500 sounded like a pinball machine, BONK!!, GROAN!! PING!!, constantly. now, i was running in the factory ''coin'' mode, and i guess i was picking up everything that has been there for years, some deep. i got to thinking, maybe i should try to cut the sensitivity [ factory 75% ] and maybe the threshold back somewhat to try to quiet the chatter down somewhat. what do some of yall say????? i am not trying to get a 12'' coin, but it should easily get the ones 3''-5'', and i'm getting WAY too many signals as it is. advice, please,, pros and cons?????