[bly]

I installed a rebuilt 9 inch traction-lock rearend into my cobra. Have not drove it yet, but when i roll it in and out of garage, once in a while it will make a popping sound from rearend. Mostly when I roll it backwards. It does not do it all the time. Someone told me it may be the rearend needs to be broke in, as it is new, with new springs and other components.
Was wondering what you all thought of that theory, or have any other input for me, Any would be greatly appreciated, as always.

Bly.