RE: diffs AGAIN
different car same problem !
YES IT IS A FIRE HAMMER
I noticed some of the main drive gear screws had come loose so I tore it apart to fix. I felt the diff was very chunky while turning the drive so I also tore it apart and cleaned it all up for inspection.
everything was fine.
I bumped a curb side ways last weak and apparently drove the drive lug on the left side right up against the bearing and it was almost locked tight but didnt notice at that point. ( kept driving )
loosened it up now and everything is smooth again lots of control.
I had noticed that it was pretty hard to control lately but now it is explained since the back wheels were turning at dfferent speeds.
I made small shimms to help keep the spacing right.
hope this helps
mike