Replacing your existing shocks with the Koni FSD technology shocks is a different situation than merely replacing old shocks with new shocks - because of the way that the FSD shocks dampen with respect to standard shocks.
Knowing now (after having put up with the stock shocks so long) how well the FSD technology works - I should have replaced the Ford shocks soon after buying our new RV. I finally figured out that what we needed back in the rear from our shocks was "no shock action at all" to soften (via their high frequency damping response) the sharp jolts from potholes and highway cracks ... and "stiff shock action" for control (via their low frequency damping response) on curves, going over curbs, parking lot entering/exiting, and rolling road dips. The Koni FSD shocks are designed to dampen differently (via high frequency or low frequency response) in these two different scenarios.