WH brake recall

I have been trying to find out what years the WH brakes had the recall. I have seen conflicting info on various WH related websites. Called a WH dealer and was told with the last 8 digits of the vin he could tell me. I know the W24 was not affected at all. Does anyone know for sure what chassis and years the Bosch brake recall was needed? I an looking at a WH chassis now and the owner says that his MH was not impacted by the recall. It is 33 ft MH so I doubt it is on a W24 chassis.