was changing my front shocks this afternoon and thought while im under there ill grease the uj and prop shaft. took hand break off and put it in neutral and both front wheels span but not the front prop shaft. puzzled as to what has happened. I tried it in drive and reverse but nothing turned. eventually I greased them the way I normally do it. me under the car in access mode and my wife going slowly so I can get to the grease nipples.