Originals were too light , The replacements have been beefed up/larger rubber joints... This link is the most common weak one of the 5.
They are cheap and you do not have to re-align after the change as they are non-adjustable...
They are hard to detect faulty to untrained eye. One way is to have someone watch the rear tire as the driver torques the engine in R and D with foot on brake.


I would just change them out ...anything over 50K/5 years and they are on there way.
So nothing really lost. [ and I think that will more llikely fix your problem]