There was a leaking bag which Airlift was quick to replace, then a leak in the system causing the suspension to sag under load. Airlift did everything to help me solve my problems. Bottom line, go ahead, bite the bullet and get some Ultimate bags (with bumpers built in) and an onboard pump to keep the pressure where you need it. I had the Ultimate system in my old hand-filled truck, but the on-board compressor is the way to go!