I bought a garrett ace 250 yesterday and I'm finding it hard to understand what's going on. I just need abit of tips to get me going and know what to do kinda thing. When Im out in the fields I'll be metal detecting on the "jewellery mode" and sometimes it'll detect a metal but it will be foil or something along those lines but foil has been discriminated and it shouldn't detect it, is there a way to know that it's foil? And another question, what sensitivity shall I use for wet/dry sand or hard/soft soil ground. I'm really interesting in metal detecting but I just don't like reading from a book, if anyone can help please let me know thankyou!