Are you actually experiencing sway on your 400? We found ours very stable. If your tow vehicle doesn't require it, you may not need it. Our tow vehicle manual states sway control is required for towing loads over 2000 lbs, so we went with a weight distribution hitch that includes sway control. We like how it rides and in our case you can reverse with the WDH installed.jenniferlzr said:I’m trying to avoid sway on my tab 400 and someone on the new camp Facebook group said in the tab manual it says not to add a weight distribution hitch. Is that true and if so, I guess I will just add sway bars. Anyone know about this written in the manual?