Have 2005 Rock wood 8315ss, weighs 6500 pounds. Towing with GMC truck. Purchased Hopkins Agility controller. What setting has worked best with your towing? Number wise?
I found this on etrailer http://www.etrailer.com/question-6986.html
Setup is dependent on the trailer weight tow vehicle and trailer brakes. It's not one number fits all trailers. You will need to experiment to find the right setting. Some times you need to adjust on the fly if your in town or on the highway.
Hope the link helps.