8 3/4 rear end confusion

Okay I see, I’ll pull the passenger side axle again to see if the button is still in place. I’ll do my best to get the axles in without allowing the buttons to fall out. If I can’t get it, I’ll just pull out both buttons and use the green bearings. Idk if I want to pull the dif out just yet. Btw, when I was disassembling my passenger side axle/brake assembly, I noticed that there was no adjuster tab. I’ll have to find one online. If I use the green bearings, can I leave out the buttons and the adjuster? That seems like the easier route but at the same time, everything I’m doing is to learn. I’d like to learn how to set axle play.