Is it common for the yoke and splines to wear on the drive shafts? Mine has a wobble about 40-50 mph, and it felt like a u-joint, so I crawled under it and come to find out it's the drive shaft not the u-joints.. Is this common? And is there an upgrade? And also I have no power to the fog light wires.. The fog lights got cut/ripped off and the wires are still there, but no power when I flip the switch.. Fuse is good though and so is the relay.. Anyone have any wiring diagrams?