troubles with evo VII RS-II

Hi, i´m having some problems with RS-II hydraulic unit differencial control, there is a small pressure sensor and his dead.
i know it is a common problem with RS-II, so does anybody know a replacement sensor, couse mitsu does not offer the sensor separately:((
...i´we heard that there is a repacement.
all three lights in dashboard are always on and few seconds after starting the engine the pump makes noise like hell:((
i´ll be greatful for any information:)
thanks. and regards from estonia:))