2016 KEYSTONE MONTANA Suspension Problems

I HAVE A 2016 KEYSTONE MONTANA 3402RL 5TH WHEEL AND ENCOUNTERED A SERIOUS SAFETY ISSUE THIS PAST JULY. WHILE TOWING FROM KENTUCKY BACK TO NY, I NOTICED MY REAR AXLE NOT TRACKING PROPERLY IN MY REAR VIEW MIRROR. I PULLED INTO AN INTERSTATE REST STOP AND FOUND THAT THE REAR SPRING BOLT ON THE PASSENGER SIDE REAR AXLE HAD BROKEN. IT WAS REPAIRED TEMPORARILY TO GET ME HOME AND I TOOK IT TO THE DEALER. THEY REPLACED IT WITH THE PROPER PARTS. IT IS A CORRECT TRACK SUSPENSION MANUFACTURED BY LIPPERT. THIS FALL BEFORE PUTTING THE CAMPER AWAY FOR THE WINTER, I CHECKED ALL OF THE BOLTS AND THE ONE THAT WAS JUST REPLACED IN JULY WAS ONLY FINGER TIGHT. THERE IS AN OBVIOUS ISSUE WITH THIS SUSPENSION AND FORTUNATELY, I DIDN'T HAVE ANY ACCIDENTS. I AM CONCERNED WITH WHAT COULD HAPPEN TO THOSE NOT WATCHING THEIR LOADS LIKE I...