Outer Limits 4x4 Board

Im just about to rebuild my front diff in my gq the tail shaft angle has destroyed the pinnion bearing so will be fitting castor correction it is only a three inch lift i didnt think it would cause so much damage but i was wrong just wondering if any one has some advice preloads back lash adjustments any thing will help i am an 3rd apprentice mechanic i have full work shop access hoist tools the works just never built a diff any sort of info will help thanks for the time
GQTROL