ORIGINAL: Lantern
When you say "every bump and jump" do you mean every one that should involve air time? Meaning a significant jump instead of a bumpy track. If you mean a bump or jump where all tires are leaving the ground then I would think there is a problem with the breaks dragging. I'm currently battling this problem as well......sure makes flying my LST interesting!!
If the problem is just handling bumps I would suggest softening your suspension at the end that is bouncing the most first and work from there.
It is when air is involved. All the jumps and also some moguls as well. I checked the brakes for drag and they are free at idle. I prefer to have a little lift on the front of the truck when in the air as opposed to the rear. But this is insane the truck hits a foot high Mogul and flips rear end over front on my lid. No issues with turning or traction, just at lift off! What do you think??