HELP trailer sway almost killed us!

Thanks for the quick replay and encouraging words. The trailer hitch was probably a bit too high it was what we used before we bought our new Tacoma double cab. The dealer is checking the trailer brakes but seemed reluctant to check the controller since they didn't install it. If I can't find a hitch that is perfectly level, would it be better to have a slight downward lean frontward. Oh and BTY this hitch on our Highlander made the trailer ride perfectly level and yet it still did the same thing which is one reason we switched to the Tacoma; that and my son needed a reliable used car.