This may help: https://www.youtube.com/results?search_query=blue+ox+sway+proDo you have a link to the video or a way for me to locate the one you're referring to?
I've got a Blue Ox sway pro system.
I had exactly the same issue on my last trip, found that once you have the trailer hitched without the spring bars, using the tongue jack, physically lift the back of the truck 1inch above where the tongue starts to bear down on hitch, then install spring bars, then let full weight on hitch, I found this method put more weight evenly across both axles of truck, and it didn't feel like I had lost any steering control, front end firmly planted on ground![]()