More of a happy post, but had to re-quote this section.
I am happy to report that replacing my front wheel bearings got rid of 99% of the wobble / shimmy that I had around 85-90km/h range.
It is strange that old bearings were nice and tight. I've checked and re-checked multiple times. I had a mechanic check the tightness and there was no play and they were spot on. So I ticked that off from the beginning...
But oddly enough , even though the old ones were tight and not in a bad shape, for some reason still managed to give me the shakes.
It is so nice to drive on the freeway now. No more fear of being stuck behind some wanker who doesn't want to do 100. So i had to sit there doing 85-90, exactly the sweet spot for the shakes.