Myron,,,,, one may think it is easy, HOWEVER, many types of rear-ends are assembled with what is called a crush-sleeve.Once it has been crushed, it is nearly never that it is reuseable.
-Some have gotten lucky with just doing a proper retorque on the re-sassembly ofthe yoke to the rear-end.
CHeck with a reputable shop that services rear-ends and gear assemblies.

There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!