Nexxus, we've found that jumping/landing is a strength of this buggy. Check to see that your shocks aren't pressurized. Mine have taken on air at times and the symptom is usually as you described.
I also just changed to the 1.7r/1.6f piston combo that most of the team run and found it to make the car more forgiving of my shortcomings as a driver, less grabbing and crashes due to me not timing jumps well. Stock is great on higher bite/smooth but not as good on bumps. I haven't lost anything with this change that I've noticed.