Hi, I had a pair of nice TD401s that I was saving for a project, but I had to sell them in order to buy a second Lansing Iconic for stereo. Both drivers worked perfectly. Anyway, I packed the drivers very well, with each in its own box. I just heard from the buyer who says that one only makes a scratching sound and that the other is totally silent. Would this be the pole piece shifting during shipment? How much of a jolt does it take to knock that out of alignment? Trying to figure out the likelihood of it happening on both. I've never had anything like this happen before.