I am a fanatic about keeping my detectors clean, I recently bought a Compadre with a 7" coil and coil cover. It is mint condition and I wanted to take the coil cover off to have a look see at the bottom of the coil and for the life of me I can't get it to come off. I know that the 9x8 spoked coil covers can be hard to get off but this one takes the cake. I wouldn't be surprised if it has never been off. I put the coil in the sink soaking in water for a few hours and it still won't budge. Any idea's??? Thanks! Steve.