Hook the fiver up first and see how it sits. I had a 2003 3/4 ton Ram and now a 2012 dually one ton Ram, both 4x4's I raised the trailer with the shackle bolts to allow the highest setting and adjusted my pin box. On the 3/4 ton I had an RBW hitch and on the one ton I put in a B&W 3300 hitch and it is on the highest setting. It was the first one I tried. My trailer rides level and my truck settles about 2 to 2 1/2inchs. I have a lot of clearance between bed and trailer. I will measure next time I hook up but it is at least 6 inches. Have had no issues. Try it and do the simple changes first adjust shackles, pin box and or hitch. Good luck.
