I always thought double adjustables were low speed bump and low speed rebound, since they determin the car's handling. Fast bound/rebound are more for absorbing "shock", which isn't as critical.
My problems at RFR aren't really the harsh bumps/curbs/washboard... it's the longer stuff that loads up the rear of the car then launches it into the air... most notable at turn 1, where my current suspension basically tosses the rear of the car into the air making me balistic just after turn-in till the apex when the car comes back down and I have enough traction to turn right towards the apex of 2. Ask Eric, it's scary as hell in my car.
