Here is what Neil said about bushings:
-NB: “Here’s some bushings that are good. Bones soft: remember to use all bottom ones 14mm, otherwise you bottom the kingpin out.”
“If you need more resistance. Power Dyne Magic cushions “Universal” the yellows work for most people.”
“Bont bushings 78a are good too which are also for roller skates, cone on top barrel on bottom.”
Here’s a shot of mine with Bones soft bottoms all around…

Very surfy!!