My MXT is fairly quiet with the trigger in the middle position and in relic mode, but if I push it forward it sounds like somebody is shaking a bag full of broken glass in my headphones. Is that normal? I been hunting with MXT for about a year and half now and since I relic hunt the middle position has always been fine. But, now I'm looking at doing some coinshooting for old coins and thinking that it would be nice to be able to use it with the trigger forward and not hearing the iron.