I know this sounds a bit lame, but have you turned the driver upside down in the cabinet? If it has just loosened up a little around the spider and the voice coil is touching the magnet, this may be all you need to do.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.