8 1/4 Gear Change Question

1. the hex face out on the carrier bearing adjusters. the adjusters must be turned with a special tool that allows you to reach down the axle tubes. i dont have the torque specs for it at the moment but i can get them

2.no unless your old gears were 3.55's you can not mix gears

3.yes i just have to get it off of my phone it was pefect on the first try with 3.55 gears.