...............what can you tell me about the new improved mineralized chip that Garret has been installing. I just sent my GTP 1350 in for the mineralized chip upgrade; as I'm in a mineralized area up here on the North West coast. Will it give me less performance in non mineralized areas? What characteristics in the detectors operation might change? Is there anyone out there who has used a detector with the new chip installed...........what can you tell us? I really like my 1350 and I'm hoping the upgrade will make it even better................a big thanks to all who respond.