I have 3 (maybe 4) drivers that are very dear to me that all have rubbing VC's when you push on the cone. Some are worse than other (as far as friction and the point at which they begin to rub). Also, at least two of them seem to go through their entire stroke without rubbing if i push at a specific (off center) point on the cone so i'm guessing the VC has shifted. Honestly I've been trying to contact driver manufacturers to see if they have any recones for this driver or have a kit similar enough so i can experiment and make some frankenwoofers. Any ideas?