changing diff ratio, broken LSD???

[fax0815]

Ok, the TA22 Diff does have a different housing, so I won´t be able to swap it straight into my AE86

I´ve also looked an tightened the pinion nut, no change.
But I have another idea:
All the bearings were new, I drove them for maybe 1000km the new bearings settled a little. Is has only very small play, and it didn´t get worse for another 600km, going by the the noise, the contact pattern stayed the same, too!
If I had a crushed sleeve I just need to retighten everything, and it whoud be fine.
The Bearings seem fine, no tight spots, overall smoth running.
During the solid spacer it cant be retightend, it needs to be disasembled a few of the solid spacer shims need to be removed.

Does this sound resonable???
Thanks