Got the expl.11 back from being worked on and they replaced the hole detector and it works a little better. I have a question , in trash I tried the sen. on 26 and it was unstable so I put the sen. on 17 and the ID worked putter good in medium trash ( like 3 targets under a 5" coil) . Why does the sen. effect the ID?????? Today's hunt 4.06 clad, gold ring collectors medallion for whitetail deer.