Hey guys I just installed and 8.8 in my buddies 65, and I had to change the pinion bearings. I reused the same pinion shim so I didn't change the gear pattern at all. I'm getting a hum in cruise that goes away on acceleration. my buddy says its the axle bearings. He said that if the pinion bearings are bad, then the carrier and axle bearings are probably bad too. Any thoughts?