RE: my rustler to slash conversion!!
Move the bottoms of your rear shocks to the outside holes! When you put them on the inside holes, that gives you the most ride height, but also gives the shock a disadvantage when it comes to leverage, so it makes the suspension much softer. If you move the shocks to the outer most hole, the truck will be much stiffer, and ride just a little lower, but it will be worth it.
Eric