i dont build im too lazy to even try to glue this surround i have onto my cone on the one i ripped the surround in half on. i picked up a pair of mojos for cheap while sackett rebuilds my tc 5200 15, the first mojo died a violent death when i ripped the surround in half all the way around, the second one started making noise today, im assuming glue failing on the spider. i would be sending them to sackett too but he has had my tc for almost a month now..................... do you need my motor in your hands to recone it with an 8 layer coil?