the hydraulic compensation mode does work, however you now have to set your header height manually. To set this, first place the switch in compensation mode, then hold the "R" button until it beeps, the header will fall to the ground. Hold the "R" button again until the pressure differential display reads a high as it possably will go, then manually set the header to the desired working height. At the begining of every pass it is necessary to manually readjust the height of the header, but the pressure comp. mode IS opperating. Note: The icon in the infoveiw monitor does NOT remain lit when the pressure comp. mode is active, only when setting the pressure differential.