Thanks guys.
I just changed the bearings today and what a difference it made.
The rear driver side bearing came apart as I removed the assembly! The other side was not too bad but i changed it as well.
I must say, it took a bit more to replace the hub/bearing assemblies that I thought (and what the manual showed) but I got it done ok.
Just an FYI for anyone else planning to tackle this project, the new bearings are a very tight fit! Called a mechanic to make sure this was normal and was told they should be pressed in by a machine shop (all closed on Sunday) but managed to install them fine with a rubber mallet & a board.
Just need to take it slow, easy and keep centered on your (gentle) hits. Also a little bearing grease on the spindle shaft helps too.