generally the preload rings and spacers have no effect on the rates or static rates, the only time they effect the static rate is if they have been adjusted excessively and there is no longer droop in the suspension.

in short, use preload to adjust ride height only


rolling over is a combination of speed, to much traction, suspension travel, roll centre, cog and the suspension not been able to absorb the forces from changing direction.

one big thing i recommend...... try limiting the suspension travel and use a slightly thicker shock oil.... say for example, if the shocks have 2 lower holes, use the outer holes, and if needed you can use nitro fuel line under the shocks piston to limit the shocks range.

once u have a workable suspension range, then play around with springs and fluids...

something to be mindful off.... to much traction is a killer. if u reduce the front so it favours understeering rather than rolling over, it might be nicer to drive