From what i understand you cannot use a RB pedal with a gh kit or a gh pedal with a rb kit, as they use a different kind of sensor in them. i believe RB uses a magnet switch and gh uses a peizo sensor. ( or possibly the other way around ) i saw once some kiid did make his rb pedal work on a gh kit, but to do it he had to modify his pedal by adding a peizo sensor to it