That was the era of wood racks, and worn spots, and maybe they even used worn pool room balls in some events. It had nothing to do with the slate country of origin or the cushions or the table brand.
You need a new set of balls and a magic rack. And replace the spot on your table, or remove it entirely and use a magic marker dot as the spot.
The Aramith set you have is a low level set. Get the Aramith tournament set, or any of the Dynasphere sets. They are both better tolerances and better polish which will make the balls roll better.
With that setup, you can even use the now banned Corey deuel break and get runnable outs.
If you don’t know it, get all of the 2001 US Open matches with him in it. Or, get the TAR Shane vs Donnie Mills 9 ball race to 100. Donnie broke them even better than Corey.