Yes Dave but due to the way debonair can is designed it tends to sit lower in the travel even after setting sag at 30%. I never experienced it with the standard monarch plus aircan. Increasing pressure only creates a harsh, overpressurized shock.I have zero experience with a RS Monarch but wouldn't the debonair with spacers be effectively the same as the normal smaller air can?
Either way fixing pedal bob is ultimately an issue with the suspension design and/or a lack of low speed damping. Trying to use a firmer or more progressive spring rate won't make much of a difference.