I'm tied up right now on my Xcal Skullies Headphones, Davespen is excellent..Treasure Hunter May ring in for him...or you can follow one of my video's....Question, you have a backup machine to the xcal...WOT is a great coil but for me, I found it less versitile then the 10...
I would recommend a good pair of glasses, no one around, and soldering skills.
and best to test before you put her back together..
You can send pm to davespen, it will take s couple weeks as he is busy. Don't recommend anyone do it that is not real comfortable doing it, if it isn't waterproof you want know till it is too late.