so I bought this used e-trac a few weeks back after a few year hiatus and it looked clean enough, did a hard reset and I put in my old programs and hit the ground running... I have been finding coins but nothing really deep???? the machine has been going nuts every now and then... I have been having to turn the sens way down ... my last E-trac I ran hot.. between 27 and 29 all the time... so what could be the issue? well after a very short lived hunt at a new park this morning I decided to dismantle and check all connections and clean... well, when I popped that coil cover off...HOLY #*&@!! I have never seen sand and clay so packed into every recess in the coil and on top of that... a layer at least 1/16th of an inch coating the entire space between the coil and cover... I have been carrying the earth around with me, did the last guy detect in mud? it's amazing I was able to find anything. well cleaned it all up and it is now a super sport detector once again... can't beleive after all these years I did not figure it out sooner... my 13" ultimate coil arrives friday... so now my finds should go up!