Well my new Moser 9" rearend makes noise in 5th and 6th gear. While cruising, steady pedal with no acceleration. Let of the pedal and the noise goes away. Called Moser and they stated its my pinion angle....Sure ok.... So I'm checking my angle relative to the ground and seems about right. Then I start researching and it seems my pinion down angle should be relative to the driveshaft not the ground. I'm confused, I thought I had this right in my head and now I'm questioning myself.