8 3/4 adjustments

To late now, those adjustments needed to be noted BEFORE you took it apart.

The pinion needed to be checked for preload prior and then reset, the BL needed to be checked and noted.
Now you need years of experience to know what you're going to do, or guess at where the original person set up the tolerances and then guess how much wear they got and add to that, so you're going to be removing the diff more than once to get it right.

The set up specs are different then what you need, was that diff set up at 6 bl or 8 bl or 10 bl and how much wear can you figure it has, can you read the pattern at all on the gears now.
The pre load will be re-set at a used bearing spec of right at 16 to 22 inch pounds.
You'll need a torque meter and dial indicator to set those