How to rebuild a 8 3/4 Borg Warner Posi Unit

Hi thanks for your help.
I have it all apart i was guessing that was what i had to cut down to get it to lock up. Just was not sure how to take up the slack i machined off . Any idea how many thousands of an inch it usually takes to get it to reseat?
One other question what did you use for gear oil on your unit.