i just tested out my car with the CF chassis, center one-way unit, rebuilt diffs and shocks, and a new 19t motor. i went from the stock shock oil (40wt?) to 30wt hoping to get a more plush ride, but i am getting the opposite effect. the car feels "jittery" whenever it gets up to higher speeds, and especially when i turn. maybe my diffs are still too tight, cause it is really not looking setup well. maybe it's just because i am running it on an unprepared (rough) asphalt neighborhood road, with really crappy HPI X-pattern treads (no bite at all). any suggestions as how to smooth it out? maybe go to a softer spring? i am using the stock white (yellow) springs.