I have a 97 Cobra. I had a leak in the rear end seal. I had my brother drop the driveshaft and replace the seal on the rear end. Now I have a new problem. Under Deacceleration the car is giving me a horrible whining From the rear end. My brother is thinking maybe he did not tighten the bolt enough and the noise is backlash when you get off the accelerator. Me personally I am thinking the worse. Like new ring and pinion from what I have been reading. Any suggestion?