I've been messing with my driveshaft DIY style, and got it put back together a few weeks ago. I have a two piece driveshaft with a center support and bearing. I taped a mic under the car at various locations, and the noise was most prominent when the mic was facing the center support. Take a listen: http://www.bethnjoe.com/bearing1.wav EDIT: If you just click the link, it will open a new window but not play. You will get an error. If you press enter at the end of the URL in the new window, it will play. I guess the bearing has become deformed. It purchased it brand new and it is only a month old. Anyone able to confirm or deny my thought? Thanks,