When I bought my travel trailer (Dutchmen Sport 26B) the dealer initially hitched it up by coupling the ball to the hitch, jacking the trailer up until the rear springs were fully unloaded, and then attached the spring bars with a high amount of tension. Needless to say, the ride was downright scary! Since then I couple the trailer, and the truck squats about 3 inches. I then jack up the trailer 1 1/2 inches and attach the spring bars with only slight tension. The ride is nice and stable. Does this sound right? Once I didn't jack up the trailer at all and only applied slight tension on the spring bars and the truck rode great, but I was concerned about exceeding the tongue weight on the hitch(factory unit rated for 500lbs without weight distributor). The loaded tongue weight on the trailer is about 950lbs. Is thier a right "scientific" way to do this, or is it done just by feel?