I took my old diablo 2 into tesoro yesterday. Got to meet Robert, very nice young fellow. Robert fixed me up and was able to get the job done the same day. My 20 year old tesoro works like new again. I got to meet the staff at the front door , 2 very nice people. They bend over backwards to be helpfull. I must say Robert is the man. Thanks again Tesoro for being such a great company and MADE IN THE GOOD OLD U.S.A. OLD FART. I am a Tesoro fan forever. Very good detectors. I think my next purchase will be the Lobo ST.