Sounds like it is time for a "virtual beer summit".....

So did you change side bearings befor you found a problem ..??? ... How did you install the baerings on the case ...???? ..did you use a 10000000 ton press...???

pull the pinion out of the case ... pull the ring gear off the LSD ... mount the LSD back in the case ... set perload on LSD tighter then you would in the diff normly ... "Mike" run out on LSD ring gear mouning flang... take a "file" to the RG mouning flang ... is there high spots on the RG flang..

let me know ... Have a good day

David

Hazardous Toys inc

So the bs just wrecks the hole thing ...

Many of the newer Mitsu ring gears are not a tight fit on the carrier. This kind of bothers me a bit but I still get nice setups.
When you swapped the gear 180, did you note if the variance in the lash stayed with the gear or the carrier?

To check runout do not bother disassembling the whole diff, there is no need to and without a ringear bolted to the carrier you can not get an accurate reading. You need the ringear bolts up to torque to ensure the housing is clamped tight.
Just setup the indicator on the backside of the gear and see what you get. If it is running true work on getting a radial runout. I have found some housings to not run true radially.

Another thought, when you reassembled the LSD, are the two scribe marks on the carrier together?

.007 backlash here

.007 backlash here


.004 backlash here

I think in the pictures above he is showing runout and stating what backlash he has in those locations.

Where you can fit the 0.001 shim in, can you get that in all the way around?
Or just part way?

With runout as you have you may be best to strip this down to investigate.
I would pull the clutches out and work with an empty diff. Check radial and lateral runout.
Is the radial runout the same at the ID where the gear mounts as well as the OD?
Try rotating the housing halves in relation to each other and see if the runout improves.
Do you have another diff to try?