8 3/4 Issues

It's not only backlash you have to be concerned with but the gear mesh pattern also. Plus the pinion preload has to be set. If you have never done it, it is a bit much to jump into.
Thanks, I bought the car 3 years ago when I was 16 and the project didn't really get rolling until quarantine happened, so basically, everything I've done has been my first time doing it and these past months have been filled with trial and error, I'm torn right now between tearing it down again trying again or just taking it to a local driveline shop and making sure it's done correctly.