I have been having a tough time trying to find the best shock oil and spring combination to allow my scx10 to articulate well. Right now with my set up, I'm finding the rear wheels to lift off the ground when I go over rocks. I am running the proline powerstroke scaler shocks with 40wt oil in all 4. I want to know what you guys would recommend I do.. Also was thinking about wheel weights. Would that help to? If so, how much?