So some of you know that my 6000 arrived defective right out of the box and that I sent it back to be replaced the morning after I got it. Well the new replacement arrived yesterday and the detector works as I assume it should. Well, at least it will sound off on a nugget, so I assume it is working properly. I have the 14" DD on to test that out. When I picked up the 11" to pull it out of it's plastic bag, I noticed something odd on the top of the coil. There was a crescent shaped crack in the c