'99 KDX 220 - bought it almost new with stock tires. Tire pressure 16psi here in the rockies to prevent rim cuts. [many enduro riders run 18 - 20 here]. PROBLEM -- severe front end washout / understeer @ 30mph and above on flat corners. Changing front tire made no difference and "climbing" way forwards in corners did nothing. Installed RT Gold Valves [stock HS compression was excessive] and stiffened up rebound. Still very little improvement.
Finally, because the front end was bottoming on steep downhills, I installed .38 front springs [.35 stock] - and the set rear sag @ an excessive 4"............................................
The washout vanished & It now corners like my KX!!! Raising the front / lowering the rear should have exaggerated the [understeer] problem shouldn't it ?