Hi digman, You didn't say which coil you are using. I bought mine with the 12 inch concentric coil and quickly switched to the 6X10 DD. It was suggested at one of the forums and what a difference it made. The 12" reads to much mineralized soil or trash whichever is the your case. The machine is more noisy than a lot of other machines. Relic mode is quieter w/threshold just loud enough to hear. Maybe you can borrow or try different coil before you throw in the bay. There's a lot of happy MXT owners out there. It's a great MD. Hope this helps. Rick