Ok heres he run down. I had a bad u-joint on the pass side axleshaft,replaced it and then had a popping/binding when turning left. Took it all apart and found nothing,slapped it back together and then the noise is gone. So I got a chance to drop it in low and now I have a horrible popping/banging/binding coming from the front, only does it in 4wd. Replaced the joint again and its still there. Swapped a new unit bearing/hub and its still here. I am totally stumped and want to get ready for a moab trip in two weeks. Please help. An exploded picture of he d30 axle would help out too.