Move the shocks all the way to the last hole on the lower a-arms. Then use the hole on the shock tower wich stands them as straight up as possible! Use thick shock oil and a stiffer spring. But like the rest have said you are going to bottom out, the best thing to do is get throttle control and get to where you can land the jumps on the down ramps. Not only does this save your chassie but it will make you faster. Slow down your approach to the jumps if you are overshooting them.