need some help with my latest explorer hangup,i had the machine working good untill i went to a old foundation site and after searching several old foundations 7 hours and finding nothing but large metal junk i was scraching my head so as a test like i usally do i dug two 7inch deep holes and drop a dime in one and a nickle in the other,to my surprise the explorer could not detect the dime,i actually lost it,the nickle i could here but it was so distorted that i would not have even thought about diggin it if i didnt know it was there.this really got me mad with this machine so i was wondering what your input is on the problem. i have the explorer set up as follows sens 24 to 28, ferrous sounds,vol 5,gain 6to7,iron mask at -16 and 00/31 edited out becuse it picks up every rock in the ground not matter the setting,and normal audio.the site like most i go to must be heavy in the iron because on -16 the explorer doesnt stop with the low tones,sometimes when i get tired i edit out the very top left with the smallest curser or run -15.14. but i still cannot believe i lost my dime,makes me wonder how much more stuff i missing and if other people have this type of problems.