When I ordered the Compadre I also ordered a coil cover for it.  With my Garrett the coil cover is angled in just a hair on the edge so it grips the coil easily but is no problem to remove, just pop it off.  However with the Tesoro while the coil cover fits like a glove it's sides are straight and it does not want to stay in place.  Any suggestions, I know it should be removed to be cleaned but need a way to hold it in place better.  Also I've run into a few folks that tell me coil covers are not even necessary.   Any advice from more experience users would be welcome.