I have a 1998 blazer ls 4x4 with the 4 hi, 4 lo, and 2 hi buttons. i recently was on the highway and my cv shaft came completely out so i bought another shaft/joint assembly to replace it.. any special details i need to know b4 gettin started? i know how to disasemble but im jw if it needs to go back into the diff a certain way..... thx!