Just make sure the center red round part {coil} is not touching the metal center part...Before I tighten all my screws down I flex the cone in and out a little to make sure there is no rubbing, very easy to do. other than that, this is the simplest sub to recone, almost like changin your underwear! //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif except it requires a wrench.
O yea, If you have never taken this sub apart, be in for a huge surprise, its an effin' heavy mo sucka