What if any are most of you using for weights on the Worlds not counting the balast since its already on?

On another subject. This was my second outing with the car. Only issue is in real bumpy sections it was bouncing around really bad instead or taking them smoothe. What can I do to help smoothe it out? Im running the Worlds setup outdoors on high bite clay 30wt brown fronts, 25wt green rear. Maybe stand the shocks up a little?