Sample: "The spring bars are designed to bend at a certain rate during the "Dynamic Load" and usually this load is not an issue unless the dynamic load is enough to cause the vehicle to bottom out due to over-loading. This over-loading and chance of bottoming out will be more severe with 1200# spring bars than with 600# spring bars."
No one has reported these hypothetical issues with a WDH in the real world.
Inertia is not an upward thrust or any other kind of thrust. It's actually the resistance of a mass to be set in motion.
None of this is making sense.