Being new to this axle, I don't know what to think /forums/images/graemlins/dunno.gif The passenger knuckle swivels easily, but doesn't have any play so I assume this is good, but the driver side knuckle is EXTREMELY stiff. It takes quite a bit of force to turn it back and forth. Any suggestions as to the problem? Thanks Also, the gear oil was thick and gray? What's up with that, or is it just water in it?