Well I went out driving on Sunday after reinstalling my roof rails and rack. The installers left air in the bags and with the 1055 the gauges showed 39 psi. the tide was bouncy, stiff and too much sway. I walked arounf the rig on flat ground and the upper stable loads were not engaged in the front. Dropped it to 25 psi. still to rough and not enough engagement of the stable loads. 15 psi got better. 8 psi was just about right. This is what I had hoped for. No need or barely any help from the bags when just carrying the TC. We will be trailering out the horse on Saturday and I am guessing 15 to 20 psi will be more than enough to re level the rig and not have a crappy ride