I just went from 3.08 to 3.73. Around 60mph I am getting a vibration when I let off the gas or push in the clutch and coast. I measured the backlash at .11 and had about 25 inch pounds on the pinion preload. I replaced everything in the rear bearings, seals, and races. Any ideas? Im going to try to turn my driveshaft as Im not 100% sure I got it back to the exact original location on the pinion flange.