[KensRedZed]

Allow me a few pictures.

These are the parts I typically use for body posts.

   

The urethane washer holds the stainless steel screw and washer in place.

   

I can push on either side of the car and it leans with some effort.

   
   

As soon as I let the body go free. It quickly and perfectly re-centers itself.

   

I have won a fair amount of races in my club with this type of body float. It's a keeper.