I received my Garrett Sea Hunter Mark II few days ago.After some hours reading the manual and watching the instructional video I decided to test it on my garden.Works great to detect coins,iron,knifes...but not GOLD!!!! Put 2 gold rings together 4 inches away the search coil....and nothing.I was checking on standar trash eliminitation so I changed to discrete trash elimination..and nothing!!!Cant detect GOLD!!!My elimination was on 7..then 6...5...4...3...2...1..0 and NOTHING