8 3/4 adjustments

Yep 741 and 742's have a solid pinion spacer so you lucked out there. Still wouldn't hurt to check it though to make sure it has a little preload (6-8 inch lbs.). With that said, the only adjustment is the back lash. As noted you should have checked it before dis-assembly but since you didn't all you can do is set it at .008-.010" and hope for the best.

To set the axle adjustment back off the axle adjuster and install the axles. Tighten the adjuster until all side to side axle play is removed. Set up a dial indicator on the drivers side and zero it out. Back off the adjuster one notch at a time until you get .008~.010" play. Install the locking tab and your done.