I believe in doing the basics first hook it up and have your RV loaded with water fuel cargo and people and all where it/they would be on the road and go to a scale. As dalmationlovers stated you might be light on the front axle. You need a minimum of 75% of rated capacity on the front axle if you can get to 90% so much the better. Also just a 1/8 of slack in your receiver can make huge problems. Local fabrications shop drills a hole in the top and one side of the receiver and then welds a nut over the hole when you use a bolt through the nut it takes out any play in the hitch.