Got a Slash 4x4 Ultimate in November. Still completely stock, out-of-the-box. Love to race and hoping to be mid-pack contender.
My problem: Slash seems to be bottoming out during compression before a jump and after. I'm also hearing a kind of grinding noise when the car is compressing in the jumps in front of me.
As for the sounds, I know the body has been rubbing from time to time due to the paint wearing out from under the rear fenders. So it might still be the issue. I figure new springs will do the trick.
Also, tried adjusting top and bottom positions of the stock shocks/springs, plus added those 'C' clips to add ride height and make the stock spring stiffer (if it did any).
I'm looking into getting shocks and/or springs. I've heard that the stock shocks are fine, and its the springs that need to be changed.
Lastly, I dont know any about shock oil weight and how it affects the shocks.
Let me know if you need to more info, thanks guys!