Any horror stories with a Blue Ox Sway Pro, new design....

I know i need a new system. My current Curt system is rated for 8000 lbs/800 lbs tongue weight. My 18EC is around 5800 lbs dry, and 1163 pounds for the tongue weight. Realistically, the tongue with just the propane and battery is probably 1300 lbs, so the 800 pound bars arent doing much good, and I can tell since I cant get the front end down as much as I think it should. I plan on weighing it soon, but it's clear that the Curt is overmatched.