the only prob w/ that is it changes each one diff so they wont be consistant and the same. as for the other Q: the white springs are the stiffest and work well. you can change the shock position so its as straight up and down as you can get it. i run 50wt in front and 35 in the rear & 1.5 2 hole pistons on almost all the tracks i run at. like stated you are going to bottom out , dont set it too stiff cause you will have trouble on the rest of the track. it will be unstable and want to roll on its lid all the time. on that big jump try to tap your brake so you land on the front wheels a little before the rear ones so you dont get that "smack" in the rear.