990 Arctic Fox

I have a new 2015 F 350 CC DRW PSD LB with new AF 990 before I picked up camper I put stable loads on the bottom overloads truck and camper loaded weighs 14340 lbs loaded I traveled for 1 mo and put 7000 miles on it truck handled great but did sag a little in rear. when I got home installed upper stableloads that leveled truck out. drove 500 mi last weekend no one gave me the brights