Double cardad joint in my K10 front drive shaft

[77K10Silverado]

Guys just wondering how stiff this joint is supposed to be? should it move super freely? Mine has a lot of tension and almost snaps back and fourth when you roll it over. I have it out of the truck to replace the slip side joint but was looking into rebuilding the cardan side but getting hung up of the cost. Does anyone have pics or a video link on how to replace these? The local drive shaft shop told me it would have to be pressed apart or something difficult if it had never been done before... thoughts???