Got to use my X-Terra-70 at the beach today. I had it set on beach mode with sensitivity set on 30. I hunted the dry beach sand and recovered quite a few coins. I then moved to the wet sand and experienced some problems. With the sensitivity set on 30 it jumped around and gave me a lot of false TID's. I lowered the sensitivity to 20 and it calmed not quite a bit. The only problem is I didn't find anything at this low setting. I moved by to the dry sand and reset the sensitivity to 30 and it worked fine. Not sure what I'm doing wrong. TomB