Running my Etrac on Daytona's quick crete sand using stock coil,beach program in auto 3. I keep getting a 12-01 at the end of each swing with a low tone. I've tried running in a different mode,adjusted the sensitivity down and used noise cancel but still having the same issue. I dug a clad dime yesterday that was at least a foot deep. Can anyone offer any advice on curing this issue? Thanks for any suggestions. I will offer one ,Got to go to a different beach with some soft sand or get a jack hammer to dig with here.