I put on the RSS Steering stabilizer. Loaded the RV how I would have it going down the road (weight distribution affects alignment) took to get aligned with that weight $150 and they charged me $125 to install the stabilizer at true neutral.
I am not sold on the rear system, just seems to me it pushes some torque onto the frame, and $500 for the kit is a bit high. I would go with air bag helpers before that.
Roadmaster Reflex Steering Stabilizer | REFLEX STEERING STABILIZER (UNIT NEEDED - By Roadmaster