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Hi there Richard.
Thank you so much for your response.
I hope your well.
It seems you may have a issue with your Shockabsorbers.
If they are leaking this can cause unusual bounce on the vehicle.
In most cases the issue you described is due to shockabsorbers.
I have really rarly seen wheel bearings so this type of issue.
I would be inclined to get them checked.
If theres anything else I can help you with please don't hesitate to letting me know.
Have a lovely evening.
Thank you for using JustAnswer.
Kind regards Hemal