In Europe, towing is done with much less tongue weight, 10% would be considered too nose heavy. The gotchas are understanding that your weight distribution when parked and while underway will be different. The Ollie has long tanks that can shift the center of gravity if they slosh. Having more weight on the trailer front tires is important as that will generally mean it is the one to "steer" the trailer.
The other thing John (and the Europeans) have going for them is their tow vehicles (SUV/station wagons) have a much shorter arm from rear axle to ball than a pickup truck. Shorter arm means less torque and sway. They also have coil rear suspension which generally has less side to side play and less chance for sway to develop.
The only way to really understand your trailer's weight distribution is to weigh your TV without trailer, and then with the trailer. This will let you know how much your trailer unloads your steer axle and also ensures you are capturing weight with the tongue at ride height/with chains/WDH/etc... CAT scales has an app now that makes this pretty easy as you can do both weighs without having to go inside to the weighmaster.