sagging

Hey everyone. I’m running a Teraflex S/T2 2.5” kit with Falcon 3.1’s & 285/75/17 KO2’s. I’m not exactly happy with the articulation clearance anc think it’s sagging in the rear with just two duffel bags in the cargo area. The kit is less than a year old. Should I call Teraflex or 4 Wheel Parts...