two possible solutions:-
increase the mass but that'dn't help u either as momentum increases so u require more braking force to counter that.
ELSE
need some mechanism to increase the down force while braking, esp. when weight dist changes due to lateral forces.
btw, what is the functionality of dampers and springs. dampers are there for dampness or in simple words, oppose the motion of coils, and bring back to their original state as quickly as possible, minimizing the effect of bounce produced by coils/springs.
in case of rolla, coils do their desired task when brakes are applied but dampers used here are there to improve ride quality by reducing the bounce and force coils come to their original state and let the desired down force go what it should be.
That's why i suggest JDM dampers for rolla, though its always a good idea to have a complete set of dampers/coils but an expensive idea too.