I am needing some help in the set up of my Mayhem for off road. I usually run oval, but have been giving off road a try. My problem is the rear of my buggy is bouncing around quit a bit. I have 30wt. oil in the shocks. The track is pretty rough in spots. Do I use thicker oil or thinner oil for this problem. I also use the red & black springs, but cannot tell much difference in the two. Any help would be great.