There is an air fitting on top of the bags so I don't think a spacer would work. Your best bet is to adjust the sensor. Not sure how much of a lift you would get. Basically by adjusting the sensor, you are adding more air to the bag. The RAS is a cool system but I personally don't think its worth it if you want to lift. One of my bags is leaking and the compressor kicks on every few minutes which gets annoying. I decided to just go with coils. Hope this helps.
