Underneath my car today and noticed my aluminum driveshaft has some heavy gouging going on in the center of it. I thought it was pretty weird because it already ate my e-brake cable bracket (the one that goes into the handle and holds the right and left cables) and I have no e-brake anymore. I looked up there and it's not touching anything on the tunnel at all. Theres another bracket there too where the right and left e-brake cables run back and it looks like it was hitting there but it is completely away from it. I'm thinking that it's happening when I go over speed bumps and stuff? I guess I need a pinion snubber? And if the center of the driveshaft has a pretty deep groove in it can it throw off the balance of it? Thanks guys