I have 2 RV rigs, a 26’ travel trailer and an 8’ slide in camper, both are within the weight limits of the trucks’ towing & hauling capacity, however the camper is VERY close to the cargo weight limit. The truck is a ’14 Big Horn, 2500, long bed, crew cab and is “stock” from the dealer. The problem is both rigs will cause the truck to porpoise under certain road & driving conditions. The camper causes an additional truck handling problem due to its’ high profile, rocking. Cross winds & traversing uneven driving surfaces causes the truck to rock from side to side. In each situation I’ve found slowing down will solve the problem but I’m getting tired of driving 50MPH on the Interstates. I’m thinking of adding air bags to supplement the HD shocks & coil springs. I’d appreciate any thoughts & actual experience with air bags. Thanks.