use the search function,theres a couple of threads about it.
you can smear a cotton bud with superglue and wipe around the clean diff casing where the 2nd bearing sits and let the glue dry before fitting the bearing,this gives a tighter fit for the bearing.
dont back the 3 screws off..this just lets the bearing spin in the housing,problem is the bearing has no shoulder to sit against,coupled with the play means the bearing can cock to one side,i made some alloy spacers to go between the bearings and this locks the 2 bearings togther meaning no more slop
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