Changed out my ring and pinion today in my truck. went from a 3.23 to a
3.73. Everything went smoothly. but i noticed there is a howl or a wine when you are cruising about 40-50mph with your foot barely on the gas, doesnt do it when you let off, doesnt do it as bad when you give it more gas. wondering if this is a normal break in noise or what? there is no play in pinon gear and teeth line up just like the ones that came out of it, put same shim as old one.thanks