[obijuan]

when you slide the axle shafts in you might nick the inner axle seals and cause a leak anyways. its only four more bolts. you dont have to re set gears or anything. remove and replace.
and if you only do one ujoint the other one is gonna laugh at you two weeks later and youll have to change it anyways.
just replace the broken axle shaft. theyre not much to go wrong with those. if they ujoint caps spins in the yoke ear, its bad too. should not be re used.