DOES ANYONE DO THIS? IF SO HOW AND WHY?:freak:

Are you asking about putting spacers between the bottom of the pivot ball and the chassis or between the T-plate and the bottom plate?

yes, how does this work?

this raises the rear roll center which should loosen the rear end, you have to make sure to add the same amount of shims between t-bar and pod plate to keep chassis and bottom plate on same plane.
hope this helps

Also, you can just add a small spacer under the front pivot of the t-plat. It places a rake in the t-plate to help create pod droop. I used to use that in my 1:12 car on bumpy tracks.