just got it back from Garrett and I hate to say this but after about three hours of using the detector today it started getting very noisy and a lot of faulting,i tried turning down sensitivity almost all the way still no better i tried changing frequencies, tried resetting, changed batteries,there was no EMI around Ive been here before,brought it home tried it in my garden it would pick up about two inches tops,nothing else still noisy ,tried air test it was noisy but would give me about 6" i know air test is really no test but i had to try, when i first got it back from Garrett i took it out to my garden and it was great no problems.