Just to share my experience in building the gear diff, when I first put it together, as usuall tighten all screw in a pattern and noticed the wrap, the feeling was not great. Then I realize that if we tighten the screw all the way down, there are some areas will have higher pressure at the seal and some will be lesser or not much at all, just like a bow. So I took a gamble by just tighten all screw evenly to about 80%, just before the deform appears. Because the bit that stick out to touch with the seal is quite high, so I guess that's why it defirem when screw fully tighten, it will wrap.

And the reasult is a leak free diff