zx5 diff slipping

[tamos]

hi,
I went to drive and suddenly the driveshaft began to turn himself, opened the diff and saw that he is destroyed
So I ordered a new "bevel gear set", and "Steel Diff Outdrive Set"
I heard there was a way to assemble the diff which is strong and it will not happen again.
How to put it right, or what to do to prevent this situation again?
thx